title: Urachal carcinoma: a report of two cases.
abstract: Urachal carcinoma is a rare neoplasm of the urinary bladder. We present two cases. Case 1, a male patient, noted urinary frequency and micturition pain for two months. The surgical specimen from a partial cystectomy represented a transitional cell carcinoma that developed from a urachal diverticulum. Case 2, a female patient, had a long history of infraumbilical mass without umbilical discharge or urinary symptom. Pathologically, the mass showed a papillary adenocarcinoma arising from a urachal cyst. Both patients received successive en bloc operation. Local recurrence and peritoneal carcinomatosis occurred. Both expired 19 and 13 months respectively, after initial diagnosis.
authors.affiliation: Department of Pathology, Chi-Mei Foundation Hospital, Tainan, Taiwan, R.O.C.
authors.forename: C N
authors.initials: CN
authors.lastname: Lin
authors.forename: N M
authors.initials: NM
authors.lastname: Lu
authors.forename: H S
authors.initials: HS
authors.lastname: Chiang
authors.forename: C
authors.initials: C
authors.lastname: Kuo
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000473:pathology*; D002295:Carcinoma, Transitional Cell / Q000473:pathology*; D004240:Diverticulum / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014496:Urachal Cyst / Q000473:pathology; D014497:Urachus; D001749:Urinary Bladder Neoplasms / Q000473:pathology*