Kato Taigo, Yoneda Suguru, Madono Keigo, Tanigawa Go, Fujita Kazutoshi, Yazawa Koji, Hosomi Masahiro, Yamaguchi Seiji, Itoh Kiichiro
The Department of Urology, Osaka General Medical Center.
Hinyokika Kiyo. 2009 Oct;55(10):607-10.
A 52-year-old male presented with left intermittent abdominal pain, and was subsequently diagnosed with a tumor in the hilum of the left kidney based on computed tomography (CT) and magnetic resonance imaging (MRI) findings. Under suspicion of left renal cancer, we performed a retroperitoneoscopic left nephrectomy. Histopathological features of the resected specimen were compatible with leiomyosarcoma originating from the left renal vein. Immunohistologically, the tumor cells were spindle-shaped, arranged in bundles, and stained positive for a-smooth muscle actin and desmin. The patient was free from recurrence 2 years after surgery. The prognosis of leiomyosarcoma arising from the renal vein has been considered poor. Herein, we provide details of our case and also review 16 cases of leiomyosarcoma of the renal vein in Japan. We conclude that radical tumor resection is necessary for long-term survial.
一名52岁男性因左侧间歇性腹痛就诊，随后根据计算机断层扫描（CT）和磁共振成像（MRI）结果被诊断为左肾门肿瘤。因怀疑为左肾癌，我们进行了后腹腔镜下左肾切除术。切除标本的组织病理学特征与起源于左肾静脉的平滑肌肉瘤相符。免疫组织化学检查显示，肿瘤细胞呈梭形，成束排列，α-平滑肌肌动蛋白和结蛋白染色呈阳性。患者术后2年无复发。肾静脉平滑肌肉瘤的预后一直被认为较差。在此，我们详细介绍了我们的病例，并回顾了日本16例肾静脉平滑肌肉瘤病例。我们得出结论，根治性肿瘤切除对于长期生存是必要的。
