Shirai S, Soejima K, Watanabe S, Soejima H, Kamio T
Department of Urology, Saiseikai Kumamoto Hospital, Japan.
Nihon Hinyokika Gakkai Zasshi. 1997 Nov;88(11):961-4. doi: 10.5980/jpnjurol1989.88.961.
A case of angiomyolipoma arising from the renal capsule is reported. A 49-year-old female was admitted to our hospital with a complaint of abdominal mass pointed out by ultrasonography during her yearly health check. The tumor was 10 cm in size. On abdominal enhanced CT, the tumor was existed behind the left kidney. The capsule of the tumor was enhanced and the septums were seen inside of the tumor. MRI revealed a hemorrhage in the tumor and selective renal angiography showed the tumor was fed by the renal capsular artery. A tumor of the renal capsule was suspected and a laparotomy was done. Pathological results by the frozen section suggested malignancy and radical nephrectomy was performed. Angiomyolipoma was diagnosed histologically. Tumors of the renal capsule are uncommon and angiomyolipoma of the renal capsule is extremely rare. We have found only two cases in Japanese medical literature.
报告一例起源于肾包膜的血管平滑肌脂肪瘤。一名49岁女性因年度健康检查时超声检查发现腹部肿块而入住我院。肿瘤大小为10厘米。腹部增强CT显示肿瘤位于左肾后方。肿瘤包膜强化，肿瘤内部可见分隔。MRI显示肿瘤内有出血，选择性肾血管造影显示肿瘤由肾包膜动脉供血。怀疑为肾包膜肿瘤，遂行剖腹手术。冰冻切片病理结果提示为恶性，遂行根治性肾切除术。组织学诊断为血管平滑肌脂肪瘤。肾包膜肿瘤并不常见，肾包膜血管平滑肌脂肪瘤极为罕见。在日本医学文献中我们仅发现两例。
