title: Secondary carcinoma of the penis.
abstract: Secondary tumors of the penis are rare. The genitourinary and gastrointestinal tracts are the most common sites of origin. Immunoperoxidase tissue stains are useful in determining the primary site of secondary tumors of the penis. We report 2 such cases with primary tumors in the colon and rectum.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000556:secondary*; D002272:Carcinoembryonic Antigen / Q000032:analysis; D003110:Colonic Neoplasms / Q000473:pathology*; D006801:Humans; D007124:Immunoenzyme Techniques; D008297:Male; D008875:Middle Aged; D010412:Penile Neoplasms / Q000473:pathology / Q000556:secondary*; D010413:Penis / Q000473:pathology; D012004:Rectal Neoplasms / Q000473:pathology*
chemical_list: D002272:Carcinoembryonic Antigen