Objective:To explore the diagnosis and treatment of urachal carcinoma and to improve the recognition of the disease. Methods:Clinical data and outcomes of 5 patients diagnosed as urachal carcinoma were retrospectively reviewed.Results:4 cases were male,and 1 case was female.4 of them were treated by extensive partial cystectomy and one of them received radical cystectomy.All ca-ses underwent pelvic lymph node dissection.Bladder margins were negative for cancer in all the 5 cases but positive lymph nodes were found in 1 case.Post-operative histopathology confirmed urachal adenocarcinoma in 4 cases and papillary in 1 case.The follow-up period was from 6 to 36 months.One patient died from extensive matastasis 12 months after the radical cystectomy.Another patient treated by extensive partial cystectomy died from recurrence 13 months postoperatively.The other 3 cases had been alive without recurrence and metastasis up to the last follow-up period(18 months) .Conclusion:Urachal carcinoma is a highly malignant epithelial cancer with poor prognosis.It's difficult to diagnose earlier and easy to relapse.Surgery is the preferred treatment.%目的：探讨脐尿管癌的诊断与治疗方法，提高对该病的认识。方法：回顾性分析某院收治的5例脐尿管癌患者的临床资料、随访结果。结果：本组5例患者，男4例，女1例。4例行扩大性膀胱部分切除术，1例行根治性膀胱切除术，5例术中均行双侧盆腔淋巴结清扫。5例术后切缘皆阴性，1例患者发现阳性淋巴结。术后病理诊断为粘液腺癌4例，乳头状腺癌1例。随访半年至3年，1例根治性全膀胱切除患者术后12个月死亡，1例扩大性膀胱部分切除术患者术后7个月复发，并于6个月后死亡。其余3例分别随访6个月，12个月，18个月未见复发及转移。结论：脐尿管癌恶性度高，起病隐匿，预后差。手术是主要的治疗手段。
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