膀胱癌肉瘤的影像学表现(附3例报告并文献复习)

Imaging Characters of Bladder Carcinosarcoma (Attach 3 Cases Report and Literature Review)

目的分析3例膀胱癌肉瘤的影像学表现特点,提高对其认识。资料与方法搜集经病理确诊的3例膀胱癌肉瘤进行分析,并结合文献进行讨论。结果 3例膀胱癌肉瘤中2例在CT上表现为较大范围不规则的膀胱壁增厚或无蒂肿块,其中1例增强扫描强化较均匀,1例表现为表面或黏膜下强化;1例表现为广基底的突起肿块伴表面不规则钙化,增强扫描强化不均匀。结论膀胱癌肉瘤发病率低,影像上相对缺乏特异性,诊断主要靠病理组织学检查及免疫组织化学染色。但如果病变内部有钙化,MR T2W I像上信号不均且不出现动脉早期显著强化,则应考虑膀胱癌肉瘤的诊断。

Objective To study the imageologic manifestation of 3 bladder cárcinosarcoma and achieve more information about the disease.Materials and Methods 3 cases with bladder carcinosarcoma proved pathologically were analyzed and the related literatures were reviewed.Results 2 of 3 cases showed irregular thickening of the bladder wall or sessile mass with one homogeneous enhancement and the other submucosal enhangcement.One showed single soft-tissue mass with heterogeneous enhangcement,there was multiple calcified foci on surface.Conclusion Bladder carcinosarcoma is a rare neoplasm without differential radiological manifestation,and the diagnosis is mainly dependent on the pathological features and immunohistochemical patterns.But while multiple marked calcified foci are seen in a bladder tumor,or if the tumors do not show early strong arterial enhancement and the signal intensity heterogeneous on T2WI,we should think about the diagnosis of carcinosarcoma.