Brennan Kelly, Johnson Paul, Curtis Heather, Arnason Thomas
Faculty of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada.
Department of General Surgery, Dalhousie University, Halifax, Nova Scotia, Canada.
Case Rep Gastrointest Med. 2019 Jun 25;2019:1434838. doi: 10.1155/2019/1434838. eCollection 2019.
Urachal mucinous tumors are rare neoplasms with behaviour that can range from relatively benign to malignancy that can spread distantly or throughout the peritoneum as pseudomyxoma peritonei or peritoneal carcinomatosis. Here we describe a unique case of urachal mucinous cystic tumor of low malignant potential confined to an intact cyst at the dome of the urinary bladder, without rupture or peritoneal spread. The urachal mucinous tumor was an incidental finding on a staging CT scan performed for sigmoid colon adenocarcinoma. We believe that this case illustrates a potential diagnostic pitfall which could have prognostic and therapeutic implications. Due to the intestinal phenotype of these neoplasms, a urachal tumor of low malignant potential could be mistaken for metastatic spread from a colonic adenocarcinoma in the rare situation such as this case, where the two neoplasms occur concurrently.
脐尿管黏液性肿瘤是罕见的肿瘤，其行为表现范围从相对良性到恶性，可远处转移或播散至整个腹膜，形成腹膜假黏液瘤或腹膜癌转移。在此，我们描述了一例独特的病例，为膀胱顶部完整囊肿内的低恶性潜能脐尿管黏液性囊性肿瘤，无破裂或腹膜播散。该脐尿管黏液性肿瘤是在为乙状结肠腺癌进行分期CT扫描时偶然发现的。我们认为该病例说明了一个潜在的诊断陷阱，可能具有预后和治疗意义。由于这些肿瘤具有肠道表型，在这种两种肿瘤同时发生的罕见情况下，低恶性潜能的脐尿管肿瘤可能会被误诊为结肠腺癌的转移。
