National Cancer Institute®
Last Modified: July 1, 2002
1
UI - 2591449
AU - Lennard TW; Harris AL; Hales J; Dickinson A; Wolstencroft R; Halcrow P;
TI -
Shenton BK; McDonald M; Lawrence GF; Taylor RM
A phase I study of immunostimulation and toxicity in patients with
colorectal carcinoma using the immunomodulator
3,6-bis(2-piperidinoethoxy) acridine trihydrochloride (CL 246738).
SO - Eur J Cancer Clin Oncol 1989 Nov;25(11):1571-6
AD - Department of Surgery, University of Newcastle upon Tyne, U.K.
Seventeen patients with residual or recurrent colorectal carcinoma were
given a new synthetic immunomodulator [3,6-bis(2-piperidinoethoxy)
acridine trihydrochloride CL246738) as part of a phase I clinical trial.
No patients had undergone previous immunotherapy or chemotherapy.
Detailed immunological studies including interferon levels, interleukin
2 levels, natural killer cell function, mitogen responses of
lymphocytes, immunoglobulin levels and lymphocyte subpopulation levels
were analysed in the patients who received this drug in an attempt to
find out whether there was any biological activity identifiable in
humans. None of the subjects showed any significant increases in post
treatment values of the immunological parameters studied. Toxic effects
of the drug at high doses included nausea, diarrhoea and decreased
levels of consciousness. In conclusion, no immunological effects were
identified following the administration of CL 246738 in human subjects
with recurrent or residual colorectal cancer.
2
UI - 12015743
AU - Hardy RG; Brown RM; Miller SJ; Tselepis C; Morton DG; Jankowski JA;
TI -
Sanders DS
Transient P-cadherin expression in radiation proctitis; a model of
mucosal injury and repair.
SO - J Pathol 2002 Jun;197(2):194-200
AD - Department of Surgery, Clinical Research Institute, University of
Birmingham, Birmingham, UK. r.g.hardy@bham.ac.uk
Morphology at both cellular and glandular levels in the colon is
dependent to an extent on cell-cell adhesion mediated by
cadherin-catenin complexes. Alterations in the expression of E-cadherin,
the cadherin normally present in colon, have been shown to be implicated
in tissue remodelling within the gastrointestinal tract. Furthermore, it
has previously been shown that P-cadherin, normally present only in
stratified epithelia and placenta, is expressed in colitis and during
neoplastic change in the colon. The morphological features of mucosal
injury induced by pre-operative radiotherapy in the non-neoplastic
rectal mucosa were studied in patients with rectal adenocarcinoma. Three
characteristic phases of radiation proctitis were defined on
histological grounds (acute injury, and early and late regenerative
phases) essentially correlating with the time interval between
radiotherapy and surgery; such features were mirrored by alterations in
cadherin-catenin expression and localization in rectal crypts. On
immunohistochemistry and western blotting, P-cadherin was highly
expressed in the acute injury and early regenerative phases, with a
decreased level of expression during late regeneration. E-cadherin and
associated catenins were translocated from membrane to cytoplasm in
degenerating crypts, with return of normal membranous expression in
regenerating crypts. In conclusion, radiation-induced proctitis
represents an in vivo model of mucosal injury and regeneration and
provides a valid model in which to study events during epithelial injury
and repair. Altered cadherin expression, in particular transient
aberrant P-cadherin expression, is intimately associated with these
processes. Copyright 2002 John Wiley & Sons, Ltd.
3
UI - 11914638
AU - Boyer CR; Karjian PL; Wahl GM; Pegram M; Neuteboom ST
TI -
Nucleoside transport inhibitors, dipyridamole and
p-nitrobenzylthioinosine, selectively potentiate the antitumor activity
of NB1011.
SO - Anticancer Drugs 2002 Jan;13(1):29-36
AD - NewBiotics, Inc, San Diego, CA 92121, USA.
NB1011, a novel anticancer agent, targets tumor cells expressing high
levels of thymidylate synthase (TS). NB1011 is converted intracellularly
to bromovinyldeoxyuridine monophosphate (BVdUMP) which competes with the
natural substrate, deoxyuridine monophosphate, for binding to TS. Unlike
inhibitors, NB1011 becomes a reversible substrate for TS catalysis.
Thus, TS retains activity and converts BVdUMP into cytotoxic product(s).
In vitro cytotoxicity studies demonstrate NB1011's preferential activity
against tumor cells expressing elevated TS protein levels. Additionally,
NB1011 has antitumor activity in vivo. To identify drugs which interact
synergistically with NB1011, we screened 13 combinations of
chemotherapeutic agents with NB1011 in human tumor and normal cells.
Dipyridamole and p-nitrobenzylthioinosine (NBMPR), potent inhibitors of
equilibrative nucleoside transport, synergized with NB1011 selectively
against 5-fluorouracil (5-FU)-resistant H630R10 colon carcinoma cells
[combination index (CI)=0.75 and 0.35] and Tomudex-resistant MCF7TDX
breast carcinoma cells (CI=0.51 and 0.57), both TS overexpressing cell
lines. These agents produced no synergy with NB1011 in Det551 and
CCD18co normal cells (CI > 1.1) lacking TS overexpression. Dipyridamole
potentiated NB1011's cytotoxicity in medium lacking nucleosides and
bases, suggesting a non-salvage-dependent mechanism. We demonstrate that
nucleoside transport inhibitors, dipyridamole and NBMPR, show promise
for clinically efficacious combination with NB1011.
4
UI - 12068185
AU - Rouanet P; Saint-Aubert B; Lemanski C; Senesse P; Gourgou S; Quenet F;
TI -
Ycholu M; Kramar A; Dubois J
Restorative and nonrestorative surgery for low rectal cancer after
high-dose radiation: long-term oncologic and functional results.
SO - Dis Colon Rectum 2002 Mar;45(3):305-13; discussion 313-5
AD - Department of Surgery, Montpellier Cancer Institute, France.
PURPOSE: This prospective, nonrandomized study evaluates, with a
seven-year median follow-up, the morbidity and the functional and
oncologic results of conservative surgery after high-dose radiation for
cancer of the lower third of the rectum of patients who would otherwise
treated by preoperative radiotherapy (40 + 20 Gy delivered with three
fields) and curative surgery. The mean distance from the anal verge was
50 (range, 25-60) mm, and none of the tumors was fixed (15 percent T2N0,
53 percent T3N0, 32 percent T3N1). RESULTS: Postoperative mortality (2
percent) and morbidity (35 percent) were not increased by high-dose
preoperative radiation. Conservative surgery was done in 30 patients (70
percent: 26 coloanal anastomoses and 4 low stapled anastomoses). After
conservative surgery, long-term functional results showed 30 percent
complete continence and 20 percent serious incontinence. Four patients
had local recurrence as first development (13 percent). The seven-year
overall survival rate was 53 percent, 62 percent after conservative
surgery and 31 percent after abdominoperineal resection. The univariate
analysis underscores the tumor response impact on long-term survival
(pT<3 = 81 percent; pT3 = 35 percent; P = 0.0008). CONCLUSIONS: These
long-term results confirm the feasibility of conservative surgery for
low rectal carcinoma after high-dose radiation. A prospective
reproducibility of these results.
5
UI - 12068187
AU - Kressner U; Graf W; Mahteme H; Pahlman L; Glimelius B
TI -
Septic complications and prognosis after surgery for rectal cancer.
SO - Dis Colon Rectum 2002 Mar;45(3):316-21
AD - Department of Surgery, University Hospital, University of Uppsala,
Sweden.
PURPOSE: The influence of septic complications on long-term prognosis
after surgery for rectal cancer is controversial. This study was
performed to investigate whether an abdominal or perineal septic
complication was associated with rectal cancer recurrence. METHODS: A
total of 228 patients who had undergone curative resection for rectal
cancer from 1973 to 1992 were reviewed. The patients were divided into
groups of those who developed either an intra-abdominal abscess or a
perineal infection after surgery (infection group) and those who did not
(noninfection group). RESULTS: There was no clear difference in the
overall incidence of tumor recurrence between the infection group
(19/53, 36 percent) and the noninfection group (46/175, 26 percent; P =
0.25). However, the incidence of local recurrence was higher in the
infection group (12/53, 23 percent) than in the noninfection group
(16/175, 9 percent; P = 0.02). This increased risk was restricted to
patients with a perineal infection (10/30, 33 percent; P = 0.003 vs. the
noninfection group), whereas patients with an abdominal infection (3/24,
13 percent) did not differ from the noninfection group. CONCLUSION:
Patients with a perineal infection after an abdominoperineal resection
have an increased incidence of local recurrence. However, there was no
association between abdominal sepsis and prognosis after surgery for
rectal cancer.
6
UI - 12068188
AU - Heah SM; Seow-Choen F; Eu KW; Ho YH; Tang CL
TI -
Prospective, randomized trial comparing sigmoid vs. descending colonic
J-pouch after total rectal excision.
SO - Dis Colon Rectum 2002 Mar;45(3):322-8
AD - Department of Colorectal Surgery, Singapore General Hospital.
PURPOSE: The aim of this study was to compare the bowel function of
sigmoid vs. descending colonic J-pouches after ultralow anterior
resection for rectal cancer. METHODS: A prospective, randomized trial
patients undergoing ultralow anterior resection for cancers arising from
3 to 10 cm from the anal verge were recruited. Forty-eight patients were
males; the mean ages (standard error of the mean) for patients with
sigmoid and descending colon pouches, respectively, were 65.2 (3.1)
years and 62.3 (3.1) years. A total of 46 patients were randomly
assigned to each group. Two patients from each group were excluded;
abdominoperineal resection was performed for two patients in the sigmoid
pouch group and one patient in the descending pouch group. One patient
in the descending pouch group had a transanal resection of a benign
polyp. Dukes staging and use of postoperative chemoradiotherapy were
statistically similar in both groups. All patients underwent a
standardized ultralow anterior resection. A defunctioning loop ileostomy
was used routinely. Anorectal physiology and bowel function
questionnaires were performed at six weeks after ileostomy closure and
again at 6 and 12 months after surgery. RESULTS: Median follow-up was 12
(range, 7 to 25) and 12 (range, 6 to 25) months, respectively, for
sigmoid and descending pouch groups. Median tumor and anastomotic
heights, time to ileostomy closure, operative time, and postoperative
stay were statistically similar in both groups. There were no
significant differences in stool frequency, incontinence, urgency, use
of pads and antidiarrheals, sensation of incomplete evacuation, and
anorectal physiology results between groups (P > 0.05). CONCLUSION:
Pouches made from sigmoid or descending colon give similar bowel
function after ultralow anterior resection for rectal cancers.
7
UI - 12068189
AU - Shitoh K; Konishi F; Miyakura Y; Togashi K; Okamoto T; Nagai H
TI -
Microsatellite instability as a marker in predicting metachronous
multiple colorectal carcinomas after surgery: a cohort-like study.
SO - Dis Colon Rectum 2002 Mar;45(3):329-33
AD - Department of Surgery, Jichi Medical School, Tochigi-ken, Japan.
PURPOSE: In case-control studies, it was reported that microsatellite
instability might be helpful in predicting the development of
metachronous multiple colorectal cancers. The purpose of this
cohort-like study was to determine whether microsatellite instability is
a novel independent marker in predicting metachronous colorectal
carcinomas after colorectal cancer surgery. METHODS: Three hundred
twenty-eight colorectal carcinoma patients were surveyed by periodic
colonoscopy for at least three years after surgery. Among these, DNA
from paraffin-embedded sections was available for 272 cases. DNA of
these cases was studied for six microsatellite markers (five
dinucleotide repeats, one mononucleotide repeat). Microsatellite
instability phenotype was defined as alterations in one or more loci.
RESULTS: Median follow-up period was 74 months, and the median number of
colonoscopies was 4.6. The percentage of microsatellite
instability-positive cases was 26.4 percent (72/272). Seventeen
metachronous colorectal carcinomas were detected during the follow-up
period. Incidences of metachronous colorectal carcinomas in
microsatellite instability-positive and microsatellite
instability-negative cases were 15.3 and 3 percent, respectively (P <
0.001). The cumulative five-year incidence of metachronous colorectal
carcinomas was significantly higher in microsatellite
instability-positive cases than in microsatellite instability-negative
cases (12.5 vs. 2.5 percent, P < 0.0001). Logistic regression analysis
of the relationship between incidence of metachronous colorectal
carcinomas and possible risk factors (namely, coexistence of adenoma at
the time of surgery, family history of colorectal carcinoma, history of
extracolonic malignancy, and microsatellite instability status) showed
that microsatellite instability and coexistence of adenoma were
significant independent risk factors for the occurrence of metachronous
colorectal carcinomas, with values of P = 0.001 and 0.02, respectively.
CONCLUSION: These data indicate that microsatellite instability can be
regarded as a novel independent and important marker for predicting the
development of metachronous colorectal carcinoma after surgery.
8
UI - 12068199
AU - Duffy M; O'Mahony L; Coffey JC; Collins JK; Shanahan F; Redmond HP;
TI -
Kirwan WO
Sulfate-reducing bacteria colonize pouches formed for ulcerative colitis
but not for familial adenomatous polyposis.
SO - Dis Colon Rectum 2002 Mar;45(3):384-8
AD - Department of Surgery, Cork University Hospital, Ireland.
PURPOSE: Ileal pouch-anal anastomosis remains the "gold standard" in
surgical treatment of ulcerative colitis and familial adenomatous
polyposis. Pouchitis occurs mainly in patients with a background of
ulcerative colitis, although the reasons for this are unknown. The aim
of this study was to characterize differences in pouch bacterial
populations between ulcerative colitis and familial adenomatous pouches.
METHODS: After ethical approval was obtained, fresh stool samples were
collected from patients with ulcerative colitis pouches (n = 10),
familial adenomatous polyposis (n = 7) pouches, and ulcerative colitis
ileostomies (n = 8). Quantitative measurements of aerobic and anaerobic
bacteria were performed. RESULTS: Sulfate-reducing bacteria were
isolated from 80 percent (n = 8) of ulcerative colitis pouches.
Sulfate-reducing bacteria were absent from familial adenomatous
polyposis pouches and also from ulcerative colitis ileostomy effluent.
Pouch Lactobacilli, Bifidobacterium, Bacteroides sp, and Clostridium
perfringens counts were increased relative to ileostomy counts in
patients with ulcerative colitis. Total pouch enterococci and coliform
counts were also increased relative to ileostomy levels. There were no
significant quantitative or qualitative differences between pouch types
when these bacteria were evaluated. CONCLUSIONS: Sulfate-reducing
bacteria are exclusive to patients with a background of ulcerative
colitis. Not all ulcerative colitis pouches harbor sulfate-reducing
bacteria because two ulcerative colitis pouches in this study were free
of the latter. They are not present in familial adenomatous polyposis
pouches or in ileostomy effluent collected from patients with ulcerative
colitis. Total bacterial counts increase in ulcerative colitis pouches
after stoma closure. Levels of Lactobacilli, Bifidobacterium,
Bacteroides sp, Clostridium perfringens, enterococci, and coliforms were
similar in both pouch groups. Because sulfate-reducing bacteria are
specific to ulcerative colitis pouches, they may play a role in the
pathogenesis of pouchitis.
9
UI - 12068202
AU - Martinez-Santos C; Lobato RF; Fradejas JM; Pinto I; Ortega-Deballon P;
TI -
Moreno-Azcoita M
Self-expandable stent before elective surgery vs. emergency surgery for
the treatment of malignant colorectal obstructions: comparison of
primary anastomosis and morbidity rates.
SO - Dis Colon Rectum 2002 Mar;45(3):401-6
AD - Department of General Surgery, Getafe University Hospital, Madrid,
Spain.
PURPOSE: At present there are not enough studies that demonstrate the
usefulness of self-expandable stents in patients with left-sided
malignant colon and rectal obstruction. We evaluated primary anastomosis
and morbidity rates obtained with this method in comparison with the
colorectal obstruction were enrolled. Forty-three patients were assigned
to the study group (preoperative stent and elective surgical treatment
or palliative stent, depending on the assessment of the stage of the
tumor) and 29 to the control group (emergency surgical treatment). The
resection was not indicated in 18 cases in the study group (after
preoperative staging in 17 and intraoperative staging in 1) and in 3
cases in the control group. RESULTS: In the study group, the obstruction
was relieved in 41 cases (95 percent) after the stent placement. Of 26
patients who underwent surgical treatment, a primary anastomosis was
possible in 22 (84.6 vs. 41.4 percent in the control group, P = 0.0025),
with lower need for a colostomy (15.4 vs. 58.6 percent in the control
group). The anastomotic failure rate was similar and the reintervention
rate was lower (0 vs. 17 percent, P = 0.014). The total stay (14.23 vs.
18.52 days; P = 0.047), the intensive care unit stay (0.3 vs. 2.9 days;
P = 0.015), and the number of patients with severe complications (11.6
vs. 41.2 percent; P = 0.008) were significantly lower in the study
group. CONCLUSIONS: In our patients with left-sided malignant colon and
rectal obstruction, placement of a preoperative stent prevented 17 (94
percent) of 18 of unnecessary operations and a large number of
colostomies after elective surgery. These results were obtained with a
lower severe complication rate as well as a shorter hospital stay.
10
UI - 11829043
AU - Cheung YL; Molassiotis A; Chang AM
TI -
A pilot study on the effect of progressive muscle relaxation training of
patients after stoma surgery.
SO - Eur J Cancer Care (Engl) 2001 Jun;10(2):107-14
AD - Department of Surgery, Tseung Kwan O Hospital, Hong Kong.
Eighteen patients who had undergone stoma surgery were assessed with
respect to their anxiety level and self-reported quality of life (QoL)
on three occasions; namely, immediately after surgery, 5 weeks after
surgery, and 10 weeks after surgery. The patients were randomised into a
control group (n = 10) and an experimental group (n = 8). A 20-min set
of audiotaped instructions on progressive muscle relaxation training
(PMRT) was given to the patients in the experimental group for home
practice. Assessment instructions included the Chinese State-Trait
Anxiety Inventory (C-STAI), the Quality of Life Index for Colostomy
(QoL-Colostomy) and the Hong Kong Chinese version of the World Health
Organisation Quality of Life Scale (WHOQoL). Results indicated that
there was a significant decrease in both the C-STAI score (F = 4.66, P <
0.05) and the WHOQoL score (F = 4.74, P < 0.05) in the experimental
group. Among the domains of WHOQoL, a significant difference was shown
in physical health/independence and general perception of QoL, with the
experimental group demonstrating better functioning. For the
QoL-Colostomy, however, there was no significant difference between the
control and experimental groups. The results suggest that the use of
PMRT could enhance quality of life and decrease state anxiety in
patients after stoma surgery.
11
UI - 11829044
AU - Anderson H; Espinosa E; Lofts F; Meehan M; Hutchinson G; Price N; Heyes
TI -
A
Evaluation of the chemotherapy patient monitor: an interactive tool for
facilitating communication between patients and oncologists during the
cancer consultation.
SO - Eur J Cancer Care (Engl) 2001 Jun;10(2):115-23
AD - Christie Hospital, Manchester, UK.
Effective communication between oncologists and patients with cancer is
of paramount importance. The Chemotherapy Patient Monitor (CPM) is a
novel tool designed to assist doctor-patient communication regarding
patient concerns and side-effects. Initially, the CPM was assessed in a
primary evaluation study of its use during consultations with 26
patients with advanced colorectal cancer (one consultation without,
followed by two with, the CPM per patient). This led to a further
dissemination/audit of 34 patients attending oncology centres in the UK,
who had completed the survey prior to three consultations. The CPM
contains a checklist of common side-effects of chemotherapy regimens
used in advanced colorectal cancer, and other common concerns of
patients with advanced colorectal cancer. The CPM records the presence
of side-effects/concerns, the distress caused, whether patients wish to
discuss them further, and actions taken as a result. Questionnaires
explored the views of patients and oncologists in the UK and Spain
regarding the effectiveness of consultations during a baseline visit
conducted without the CPM, and then with the CPM in subsequent visits.
These data were then complemented by the dissemination/audit study of
the CPM across nine centres in the UK. All patients understood the CPM.
The CPM was rated as useful by oncologists in 83% of consultations, and
did not lengthen 82% of visits. Patients felt it had improved the visit
in 95% of cases. Responses from patients (100%) and oncologists (84%)
indicated willingness to use the CPM for at least some consultations in
the future. The results of the dissemination/audit study supported these
conclusions. We conclude that the CPM appears to be a useful new tool
for improving patient-doctor communication during cancer consultations.
12
UI - 11995185
AU - Pector JC; Legendre H
TI -
[Development of surgical treatment of primitive and metastatic rectal
cancer]
SO - Bull Mem Acad R Med Belg 2001;156(7-9):410-7
AD - Departement de Chirurgie, Institut Jules Bordet, Bruxelles.
There are many ways by which the surgeon can optimize curative resection
for rectal cancer. Appropriate margins with total mesorectal excision,
should be the goals for tumors in the lower two-thirds of the rectum.
Reconstruction should be performed, whenever technically possible, by a
colonic J-pouch. Preservation of pelvic autonomic nerves is possible in
most cases, reducing the risk of postoperative sexual and urinary
dysfunction. New techniques increase the frequency of curative
treatments of metastatic disease. Towards either the primary or the
metastatic disease, the new therapeutic strategies offer an hope of
cure, and a better quality of life, to an increasing number of patients.
13
UI - 11167877
AU - Wigmore SJ; McMahon AJ; Sturgeon CM; Fearon KC
TI -
Acute-phase protein response, survival and tumour recurrence in patients
with colorectal cancer.
SO - Br J Surg 2001 Feb;88(2):255-60
AD - Department of Surgery, Royal Infirmary of Edinburgh, Edinburgh, UK.
INTRODUCTION: An acute-phase protein response (APPR) has been associated
with reduced crude survival rates and increased recurrence following
apparently curative resection in patients with colorectal cancer. This
study investigated the prognostic significance of a preoperative and
postoperative APPR in relation to disease-specific mortality rate.
METHODS: Some 202 patients with colorectal cancer were followed for at
least 5 years. C-reactive protein concentration, measured before and at
3 months after operation, was used as an index of the APPR. Univariate
and multivariate analyses were performed on a number of potential
prognostic factors. RESULTS: Thirty-six per cent of patients had an APPR
and this was associated with a higher rate of local tumour invasion,
fewer curative resections and a higher carcinoembryonic antigen (CEA)
concentration. There was no difference in Dukes' stage between patients
with or without an APPR. The most important prognostic factor related to
both disease-specific and crude survival was Duke's stage (P < 0.0001).
Subgroup analysis demonstrated that APPR had prognostic significance
only in patients with advanced disease (P = 0.013). An APPR was present
in a minority of patients (11 per cent) after operation and was not
associated with increased likelihood of tumour recurrence. CONCLUSION:
The APPR is increased in more than a third of patients presenting with
colorectal cancer and is associated with more frequent local tumour
invasion, fewer curative resections and a higher CEA level. An APPR at 3
months after operation does not have the prognostic significance
reported by earlier studies.
14
UI - 12027979
AU - Law WL; Chu KW; Choi HK
TI -
Randomized clinical trial comparing loop ileostomy and loop transverse
colostomy for faecal diversion following total mesorectal excision.
SO - Br J Surg 2002 Jun;89(6):704-8
AD - Department of Surgery, Queen Mary Hospital, University of Hong Kong
Medical Centre, 102 Pokfulam Road, Hong Kong.
BACKGROUND: The aim of this study was to compare loop ileostomy and loop
transverse colostomy as the preferred mode of faecal diversion following
low anterior resection with total mesorectal excision for rectal cancer.
METHODS: Patients who required proximal diversion after low anterior
resection with total mesorectal excision were randomized to have either
a loop ileostomy or a loop transverse colostomy. Postoperative
morbidity, stoma-related problems and morbidity following closure were
loop ileostomy and 38 had a loop transverse colostomy constructed
following low anterior resection. Postoperative intestinal obstruction
and prolonged ileus occurred more commonly in patients with an ileostomy
(P = 0.037). There was no difference in time to resumption of diet,
length of hospital stay following stoma closure and incidence of
stoma-related complications after discharge from hospital. A total of
seven patients had intestinal obstruction from the time of stoma
creation to stoma closure (six following ileostomy and one following
colostomy; P = 0.01). CONCLUSION: Intestinal obstruction and ileus are
more common after loop ileostomy than loop colostomy. Loop transverse
colostomy should be recommended as the preferred method of proximal
faecal diversion.
15
UI - 12027989
AU - Nakagoe T; Ishikawa H; Sawai T; Tsuji T; Tanaka K; Ayabe H
TI -
Surgical technique and outcome of gasless video endoscopic transanal
rectal tumour excision.
SO - Br J Surg 2002 Jun;89(6):769-74
AD - First Department of Surgery, Nagasaki University School of Medicine and
Department of Surgery, 1-7-1 Sakamoto, Nagasaki 852-8501, Japan.
nakagoe@net.nagasaki-u.ac.jp
BACKGROUND: Transanal endoscopic microsurgery (TEM) is unpopular because
of its high cost and most surgeons' unfamiliarity with microscopic
surgery. This report describes an experience with a modification of TEM,
gasless video endoscopic transanal rectal tumour excision (gasless
VTEM), which incorporates a standard laparoscopic video camera and
requires no carbon dioxide insufflation system. METHODS: One hundred and
one patients with 105 rectal tumours underwent gasless VTEM between 1993
and 2000.RESULTS: Histological examination revealed 18 adenomas, 75
carcinomas (Tis, 47; T1, 23; T2, five), 11 carcinoid tumours and one
lymphoma. The median height above the dentate line and maximum tumour
diameter was 5.0 (range 2-14) cm and 2.0 (range 0.4-8.0) cm
respectively. The peritoneal cavity was opened intraoperatively in two
patients. The median operating time was 53 (range 15-202) min. Bleeding,
suture dehiscence and transient incontinence developed after operation
in four patients. There was no operative death. Median hospital stay was
5 (range 1-21) days. Eleven patients with T1/T2 staging underwent
subsequent radical resection. The median duration of follow-up was 52.3
months. One patient with a carcinoma developed a recurrence. CONCLUSION:
Gasless VTEM is a feasible, safe and minimally invasive procedure for
the treatment of selected rectal adenomas and early carcinomas. The
suggested modifications may make the procedure more widely available.
16
UI - 12072621
AU - Lindsey I; George B; Kettlewell M; Mortensen N
TI -
Randomized, double-blind, placebo-controlled trial of sildenafil
(Viagra) for erectile dysfunction after rectal excision for cancer and
inflammatory bowel disease.
SO - Dis Colon Rectum 2002 Jun;45(6):727-32
AD - Department of Colorectal Surgery, John Radcliffe Hospital, Oxford,
United Kingdom.
PURPOSE: Controlled trials have demonstrated the efficacy of sildenafil
for "mixed etiology" erectile dysfunction, but this may not be the case
if there is underlying pelvic parasympathetic nerve damage. We aimed to
determine the efficacy of sildenafil after rectal excision for rectal
cancer and inflammatory bowel disease. METHODS: Patients with erectile
dysfunction after rectal excision were randomly assigned in a
double-blind manner to sildenafil or placebo groups. After unblinding,
placebo patients crossed over to open sildenafil. Primary end points
were improvement in erectile function on a global efficacy question and
erectile function questionnaire scores. Secondary end points were
frequency and severity of side effects. RESULTS: Thirty-two patients
were randomly assigned, and two dropped out before randomization.
Fourteen received sildenafil, and 18 received placebo. Eleven (79
percent) of 14 responded to sildenafil, on global efficacy assessment,
compared with 3 (17 percent) of 18 taking placebo (mean difference, 61.9
percent; 95 percent confidence interval, 34.4 to 89.4 percent; P =
0.0009). Sildenafil improved both erectile function domain scores (mean
difference, 13.3; 95 percent confidence interval, 7.9 to 18.7; P =
0.0001) and total International Index of Erectile Function scores (mean
difference, 30.6; 95 percent confidence interval, 18.7 to 42.6; P <
0.0001) from pretreatment baseline scores. Placebo did not produce
improvement in either erectile function (mean difference, 1.7; 95
percent confidence interval, -0.8 to 4.2; P = 0.16) or total
International Index of Erectile Function scores (mean difference, 5; 95
percent confidence interval, -1.1 to 11.1; P = 0.1). Ten (100 percent)
of 10 crossover patients not responding to placebo did respond to
sildenafil (difference, 100 percent; P < 0.0001). Sildenafil improved
both erectile function domain scores (mean difference, 16.8; 95 percent
confidence interval, 9.7 to 24; P = 0.002) and total International Index
of Erectile Function scores (mean difference, 29.5; 95 percent
confidence interval, 15.8 to 43.2; P = 0.003) from precrossover baseline
scores. Seven (50 percent) of 14 patients on sildenafil compared with 4
(22 percent) of 18 on placebo experienced side effects (difference, 28
percent; 95 percent confidence interval, -4.4 to 60.4 percent; P =
0.14), 91 percent of which were mild and well tolerated. CONCLUSION:
Sildenafil completely reverses or satisfactorily improves
postproctectomy erectile dysfunction in 79 percent of patients. Side
effects are usually mild and well tolerated. The damage incurred by the
pelvic nerves after proctectomy, less profound than after prostatectomy,
is likely to result in a partial parasympathetic nerve lesion.
17
UI - 12072624
AU - Ono C; Yoshinaga K; Enomoto M; Sugihara K
TI -
Discontinuous rectal cancer spread in the mesorectum and the optimal
distal clearance margin in situ.
SO - Dis Colon Rectum 2002 Jun;45(6):744-9; discussion 742-3
AD - Department of Digestive Surgery, Tokyo Medical and Dental University
Graduate School, Tokyo, Japan.
PURPOSE: We examined the frequency, mode, and extent of discontinuous
spread of rectal cancer in the mesorectum to determine the optimal
distal clearance margin in situ. METHODS: Forty consecutive patients
with rectal cancer undergoing locally curative resection were studied
prospectively. Discontinuous cancer spread in the mesorectum and the
extent of distal spread was examined microscopically. A tissue shrinkage
ratio comparing the distal clearance margin measured before transection
to that measured after fixation in each case, was used to convert
microscopically measured extent of distal spread to extent in situ.
RESULTS: Discontinuous cancer spread in the mesorectum was observed in
17 cases (43 percent); lymph node metastasis in 15 cases (38 percent)
and small deposits other than nodal metastases in 8 cases (20 percent).
Distal cancer spread (either intramural or mesorectal) was observed in 6
cases (15 percent). The mean distal clearance margin before transection
and after fixation was 3.2 cm and 2 cm, respectively. The mean tissue
shrinkage ratio was 60 percent. The maximum extent of microscopic distal
spread and adjusted distal spread in situ were 20 and 24 mm,
respectively. CONCLUSIONS: Excising the mesorectum with fascia propria
circumferentially intact is essential for rectal surgery. The optimal
distal clearance margin for the rectal wall as well as the mesorectum in
situ can be reduced to 3 cm with a right angle.
18
UI - 12072640
AU - Kouraklis G
TI -
Reconstruction of the pelvic floor using the rectus abdominis muscles
after radical pelvic surgery.
SO - Dis Colon Rectum 2002 Jun;45(6):836-9
AD - Second Department of Propedeutic Surgery, Medical School of University
of Athens, Greece.
PURPOSE: To support the small intestine out of the pelvic cavity, many
methods have been described to reconstruct the pelvic floor after
radical pelvic surgery. I describe a new technique using the rectus
abdominis muscles for pelvic floor reconstruction. METHODS: The
posterior rectus sheath and peritoneum are opened. The rectus muscles
are exposed at both sides and they are divided between paired clamps at
the level of the umbilicus. Then, the rectus muscles are carefully
retracted downward, and the edges are sutured posteriorly to the
promontorium and laterally around the linea terminalis. RESULTS: This
method was used in 11 patients who underwent radical pelvic surgery.
Seven of 11 patients had radiation therapy started 4 weeks
postoperatively. The patients were followed up for two years. No patient
showed any complication such as adhesive obstruction of the bowel or
radiation enteritis, even in the patients who underwent radiotherapy.
CONCLUSIONS: Reconstruction of the pelvic floor using the rectus
abdominis muscles after radical pelvic surgery is an easy and safe
technique that avoids complications and serves as a barrier to radiation
injury. Therefore, we believe that this method is a promising proposal
requiring further investigation in a larger number of patients.
19
UI - 12065560
AU - Etienne MC; Chazal M; Laurent-Puig P; Magne N; Rosty C; Formento JL;
TI -
Francoual M; Formento P; Renee N; Chamorey E; Bourgeon A; Seitz JF;
Delpero JR; Letoublon C; Pezet D; Milano G
Prognostic value of tumoral thymidylate synthase and p53 in metastatic
colorectal cancer patients receiving fluorouracil-based chemotherapy:
phenotypic and genotypic analyses.
SO - J Clin Oncol 2002 Jun 15;20(12):2832-43
AD - Centre Antoine Lacassagne and Centre Hospitalier Universitaire, Nice,
France.
PURPOSE: The aim of this multicenter prospective study was to evaluate
the role of intratumoral parameters related to fluorouracil (FU)
sensitivity in 103 metastatic colorectal cancer patients receiving
FU-folinic acid. PATIENTS AND METHODS: Liver metastatic biopsy specimens
were obtained for all patients and primary tumor biopsy specimens for 54
patients. Thymidylate synthase (TS), folylpolyglutamate synthetase, and
dihydropyrimidine dehydrogenase were measured by radioenzymatic assays;
TS promoter polymorphism (2R/2R v 2R/3R v 3R/3R) was determined by
polymerase chain reaction; and p53 protein and mutations were analyzed
by immunoluminometric assay and denaturing gradient gel electrophoresis,
respectively. RESULTS: p53 mutations were observed in 56.7% of
metastases. TS activity was significantly higher in 2R/3R tumors as
compared with 2R/2R or 3R/3R. TS activity in metastasis was the only
parameter linked to clinical responsiveness (responders exhibited the
lower TS, P =.047). Univariate Cox analyses demonstrated that TS
activity in primary tumor (the greater the TS, the poorer the survival;
P =.040), TS promoter polymorphism in primary tumor (risk of death of
2R/3R v 2R/2R, 2.68; P =.035), and p53 stop mutation in metastasis (risk
of death of stop mutations v wild type, 3.14; P =.018) were the only
significant biologic predictors of specific survival. Stepwise analysis
did not discriminate between TS activity and TS polymorphism.
CONCLUSION: Present results confirm the value of tumoral TS activity for
predicting FU responsiveness, point out the importance of detailed p53
mutation analysis for predicting survival, and suggest that TS genotype
in primary tumor carries a prognostic value similar to that of TS
activity.
20
UI - 12088248
AU - Poletti P; Pinotti G; Rosati G; Luppi G; Ibrahim T; Marinozzi C; Pucci
TI -
F; Pancera G; Biasco G; Barni S; Garufi C; Martignoni G; Visona G;
Labianca R
"Misura" project: a retrospective survey on the use of 5fluorouracil in
the treatment of colorectal cancer in 24 Italian clinical centers.
SO - Tumori 2002 Mar-Apr;88(2):104-9
AD - Unita Operativa di Oncologia Medica, Ospedali Riuniti, Bergamo, Italy.
The "Misura" project is a retrospective survey, with the aim to evaluate
how 5FU is used in the treatment of colorectal cancer in clinical
practice in Italian oncology departments. Twenty-four centers
participated. Patients seen in the second half of 1998 with colorectal
cancer and treated with 5FU were analyzed. Observed patients were 664,
45.9% of patients presented metastatic disease. Biochemical modulation
with folinic acid and bolus 5FU was the most used schedule (59%). The De
Gramont (LV 5FU2) regimen, alone or with other cytotoxic drugs, was the
second most chosen schedule (14%). The most frequent side effect
observed was gastrointestinal toxicity. No hematological toxicity was
demonstrated in 68.8% of patients. Cutaneous toxicity occurred in 21.1%
of patients. 5FU is widely used independently by the stage of disease.
In palliative treatment a variety of schedules were administered by the
Italian centers, lacking a standard therapy. There are very few surveys
investigating oncology clinical practice. A larger survey on this issue
is auspicable.
21
UI - 12004205
AU - Shoup M; Guillem JG; Alektiar KM; Liau K; Paty PB; Cohen AM; Wong WD;
TI -
Minsky BD
Predictors of survival in recurrent rectal cancer after resection and
intraoperative radiotherapy.
SO - Dis Colon Rectum 2002 May;45(5):585-92
AD - Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York,
New York 10021, USA.
PURPOSE: This study was designed to determine predictors of survival
after surgery and intraoperative radiotherapy for recurrent rectal
cancer. METHODS: From a prospective database, 634 patients undergoing
were identified. Of these, 111 received intraoperative radiotherapy with
curative intent, and 100 were available for follow-up. Clinicopathologic
variables from both the primary and recurrent operations were evaluated
as predictors of disease-free and disease-specific survival by
multivariate Cox regression and log-rank test. RESULTS: There were 54
males and 46 females, with a median age of 57 (range, 37-83) years. With
a median follow-up of 23.2 months, 60 patients (60 percent) recurred: 20
(33 percent) locally, 27 (45 percent) distantly, and 13 (22 percent) at
both sites. Of all variables analyzed, only complete resection with
microscopically negative margins and the absence of vascular invasion in
the recurrent specimen predicted improved disease-free and
disease-specific survival (P < 0.01 for all). Median disease-free
survival and median disease-specific survival were 31.2 and 66.1 months,
respectively, for complete resection compared with 7.9 and 22.8 months
for resection with microscopic or grossly positive margins (P < 0.01 for
both). Median disease-free survival and median disease-specific survival
were 6.4 and 16.1 months, respectively, in the presence of vascular
invasion in the recurrent specimen compared with 23.3 and 57.3 months in
the absence of vascular invasion (P < 0.01 and P < 0.05, respectively).
Complete resection and the absence of vascular invasion were the only
predictors of improved local control as well (P < 0.05 and P < 0.01,
respectively). CONCLUSION: Resection with negative microscopic margins
and absence of vascular invasion are independent predictors of local
control and improved survival after resection and intraoperative
radiotherapy for recurrent rectal cancer.
22
UI - 12004207
AU - Kennedy ML; Lubowski DZ; King DW
TI -
Transanal endoscopic microsurgery excision: is anorectal function
compromised?
SO - Dis Colon Rectum 2002 May;45(5):601-4
AD - Colorectal Unit, St. George Hospital, Sydney, Australia.
PURPOSE: Transanal endoscopic microsurgery is a new technique that has
not yet found its place in routine practice. The procedure results in
dilation of the anal sphincter with a large-diameter operating
sigmoidoscope, sometimes for a prolonged period. The purpose of the
present study was to assess the effect of transanal endoscopic
microsurgery on anorectal function. METHODS: Eighteen consecutive
p