title: Carcinoma arising in a branchial cleft cyst.
abstract: A patient is presented who was found to have invasive squamous cell carcinoma arising in the epithelial lining of a lateral cervical cyst which had been present for more than 40 years. Radical neck dissection was performed, and metastases were found in a single cervical lymph node. A critical review of cases of branchiogenic carcinoma reported over the past quarter-century yielded no more than three others which meet the criteria for diagnosis of this entity established by Martin, Morfit, and Ehrlich in 1950.
mesh_terms: D000328:Adult; D000368:Aged; D001934:Branchial Region; D001935:Branchioma / Q000150:complications*; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D037981:Neck Dissection