Sato Hirokazu, Miyazawa Katsuhito, Ikeda Ryosuke, Suzuki Koji
Department of Urology, Kanazawa Medical University.
Hinyokika Kiyo. 2004 Jan;50(1):41-3.
We report a case of metanephric adenoma in a 59-year-old female. The tumor was incidentally detected on computed tomography (CT) and ultrasound (US), and diagnosed as left renal cell carcinoma by radiological examination. Left nephrectomy was performed. The tumor measuring 4 x 3 x 3 cm had a clear margin and was encapslated with thick fibrous tissue. The cut surface was yellow-white and the boundary of renal parenchyma was clear. Histopathologically, the tumor showed a characteristic composition of small uniform cells with regular nuclei that formed a tubular pattern. Immunohistologically, they were positive for Leu-7 and vimentin. Pathological diagnosis was metanephric adenoma. We discuss the radiological findings of metanephric adenoma.
我们报告一例59岁女性的后肾腺瘤。该肿瘤在计算机断层扫描（CT）和超声（US）检查中偶然发现，经影像学检查诊断为左肾细胞癌。遂行左肾切除术。肿瘤大小为4×3×3 cm，边界清晰，被厚纤维组织包裹。切面呈黄白色，与肾实质边界清楚。组织病理学检查显示，肿瘤由小的形态一致的细胞组成，细胞核规则，形成管状结构。免疫组织化学检查显示，肿瘤细胞对Leu-7和波形蛋白呈阳性反应。病理诊断为后肾腺瘤。我们对后肾腺瘤的影像学表现进行了讨论。
