Tokuyama Yoshiko, Fujita Tetsuo, Hirayama Takahiro, Shirai Masahiro, Kazama Akio, Iwamura Masatsugu, Baba Shiro
The Department of Urology, Sagamihara Kyodo Hospital.
Hinyokika Kiyo. 2010 Feb;56(2):103-6.
A 50-year-old male was referred to our hospital for a left renal mass which was incidentally found during a medical check-up. Abdominal ultrasonography, computed tomography, and magnetic resonance imaging showed a weak enhancement tumor devoid of fat densities at the lower pole of the left kidney. Under the diagnosis of renal cell carcinoma, radical nephrectomy was performed. Histopathological examination revealed large epithelioid cells, and immunohistochemical staining showed strongly positive for HMB-45. The patient was diagnosed with epithelioid angiomyolipoma of the kidney. Epithelioid angiomyolipoma is a rare variant of angiomyolipoma, which is sometimes occurred aggressive clinical behavior. However, our case remains without evidence of recurrence or metastasis after radical nephrectomy, and showed relatively better prognosis than in previous reports.
一名50岁男性因体检时偶然发现左肾肿物而转诊至我院。腹部超声、计算机断层扫描和磁共振成像显示左肾下极有一个无脂肪密度的轻度强化肿瘤。在诊断为肾细胞癌后，进行了根治性肾切除术。组织病理学检查显示为大上皮样细胞，免疫组化染色显示HMB-45强阳性。该患者被诊断为肾上皮样血管平滑肌脂肪瘤。上皮样血管平滑肌脂肪瘤是血管平滑肌脂肪瘤的一种罕见变异型，有时会出现侵袭性临床行为。然而，我们的病例在根治性肾切除术后未发现复发或转移迹象，且预后比以往报道相对较好。
