尿膜管癌の2例

概要

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We report two cases of urachal carcinoma recently seen in our hospital. The first case was a 31-year-old man who was admitted with the chief complaint of terminal micturition pain. Cystoscopic examination revealed a single sessile tumor at the dome of the bladder. CT scan demonstrated a mass extending from the bladder dome superiorly. Total excision of the tumor with partial cystectomy was performed. Histological findings showed a mixed type of mucinous adenocarcinoma and squamous cell carcinoma. In this case, the plasma CEA level was a useful means of assessing the clinical course. He died of a recurrent tumor 10 months after operation. The second case was a 56-year-old man who was admitted with the chief complaint of suprapubic mass. Cystoscopic examination revealed multiple protrusive tumors at the dome of the bladder and edematous mucosa surrounding them. CT scan demonstrated the same mass as in the first case and it similarly contributed to the preoperative diagnosis of the urachal carcinoma. Total excision of the tumor with partial cystectomy and partial resection of the ileum and sigmoid colon were performed because of tumor adhesion. Histological findings showed adenocarcinoma. He has been well for two years postoperatively. Besides our experience of urachal carcinoma, a review of the literature is presented.