Kajita Yoichiro, Megumi Yuzuru, Okabe Tatsushiro
The Department of Urology, Shiga Medical Center for Adults.
Hinyokika Kiyo. 2005 Jul;51(7):459-62.
A 65-year-old man presented with sudden onset of gross hematuria and urinary retention. Computed tomographic scan (CT) showed a cystic multilocular enhancing lesion (9 cm in diameter) at the left renal hilum causing thinning and lateral displacement of the left renal parenchyma. Left hydronephrosis and a renal calculi were observed. We performed radical nephrectomy suspecting a cystic renal cell carcinoma. Microscopic examination and immunohistochemical studies confirmed the diagnosis of the carcinoid tumor. The tumor cells were fully positive for neuron-specific enolase and keratin, and partially positive for chromogranin-A. One of the resected lymph nodes was positive for metastasis. Additional gastrointestinal tract examinations for carcinoid tumor were negative. However, he was concurrently diagnosed with poorly differentiated prostate cancer and hormonal therapy was started. He is free of recurrent carcinoid tumor nine months postoperatively. This case is the 31st report of renal carcinoid tumors in Japan.
一名65岁男性因突发肉眼血尿和尿潴留就诊。计算机断层扫描（CT）显示左肾门处有一个囊性多房强化病变（直径9厘米），导致左肾实质变薄并向外移位。观察到左肾积水和肾结石。我们怀疑是囊性肾细胞癌，遂行根治性肾切除术。显微镜检查和免疫组化研究确诊为类癌肿瘤。肿瘤细胞神经元特异性烯醇化酶和角蛋白呈完全阳性，嗜铬粒蛋白A呈部分阳性。切除的一个淋巴结有转移阳性。类癌肿瘤的其他胃肠道检查结果为阴性。然而，他同时被诊断为低分化前列腺癌，并开始了激素治疗。术后9个月，他未出现类癌肿瘤复发。该病例是日本第31例肾类癌肿瘤报告。
