title: In situ carcinoma in branchial cysts.
abstract: Two cases of in situ squamous cell carcinoma in the epithelium of a branchial cyst are described. These are the only cases reported that fulfill the established criteria for in situ branchial carcinomas.
mesh_terms: D000368:Aged; D001935:Branchioma / Q000473:pathology*; D002278:Carcinoma in Situ / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged