Polypoid squamous carcinoma of the esophagus. Report of a case and its implications for the histogenesis of "carcinosarcoma" of the esophagus.
D000231:Adenocarcinoma, Papillary / Q000473:pathology*; D004848:Epithelium; D004938:Esophageal Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D008853:Microscopy; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000473:pathology