[A case of squamous cell carcinoma arising in the urinary bladder diverticulum].

A 49-year-old man was admitted to our hospital with the chief compliant of difficulty of urination, lower abdominal pain and macrohematuria. On cystoscopy, a non-papillary tumor was seen in the diverticulum on the right side of the urinary bladder. Having made the diagnosis of urinary bladder cancer, we performed total cystectomy, retroperitoneal node dissection and construction of an ileal neobladder. Histologically, it was squamous cell carcinoma, pT3a, pN0. Seven months after the operation, the patient died of recurrent disease.