膀胱炎性假瘤：附五例报告

对临床上考虑为原发性恶性肿瘤而手术切除的５例膀胱炎性假瘤进行了临床和病理形态学观察。结果表明膀胱炎性假瘤是突入腔内呈团块状有蒂的良性病变。由细长的类似于横纹肌母细胞的梭形细胞所构成，光镜检查时易误诊为肉瘤，组织学上有的区域组织疏松，粘液样，但没有核深染，缺乏核分裂。免疫组织化学检查：Ａｃｔｉｎ和Ｖｉｍｅｎｔｉｎ均阳性，具有炎性增生性肿块特征。

Inflammatory pseudotumor of the urinary bladder (report of 5 cases)

cases of mass in the urinary bladder,diagnosed preoperatively as malignant tumors,turned out to be inflammatory pseudotumors after surgical resection.The pseudotumor was a round pedunculed mass protruding into the bladder lummen consisting of slender spindle cells on microscopic study.On light microscopy,it simulated a rhabdomyoblastoma very much and might be easily misdiagnosed.The pseudotumor was devoid of nuclear hyperchromasia with relative paucity of mitosis.The spindle cells of the pseudotumor were immuno reactive to vimentin and actin in all the 5 cases.The relevant literature was reviewed.