title: Squamous cell carcinoma in an esophageal polyp.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D004938:Esophageal Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011127:Polyps / Q000473:pathology*