When cancer is found in one or more metastatic sites but the primary site is not known, it is called a cancer of unknown primary (CUP) or an occult primary cancer.
Apr 19, 2011
Tumors have more aggressive histology and require more stages of excision than primary BCC
Jan 3, 2011
Link with families of certain cancers suggests a genetic basis and shared metastatic process
Apr 22, 2013
Overall, disease-specific survival up for patients who undergo tonsil resection rather than biopsy