肾嗜酸细胞瘤的诊治（附12例报道）

目的 探讨肾嗜酸细胞瘤的诊断和治疗。方法 回顾分析12例肾嗜酸细胞瘤患者的临床资料，结合文献资料复习讨论。结果 男9例，女3例，年龄46～78岁，平均62岁。肿瘤直径2.0 ～9.2cm，平均5.4cm。1例以无痛肉眼血尿2周入院，余11例均为体检发现。CT扫描2例可见中央星芒状低密度影。肿瘤边界清楚，切面呈棕黄色，...

The diagnosis and treatment of renal oncocytoma:report of 12 cases

Objectives To study the diagnosis and treatment of renal oncocytoma. Methods Twelve cases of renal oncocytoma were reported here and the literatures were reviewed. Results 9 males,3 females, aged 46 ～ 78 years, mean 62 years. Tumor diameter 2.0 ～ 9.0cm, mean 5.4cm. One case was found because of painless gross hematuria 2 weeks. Other 11 cases were found by medical examination. CT scan shows 2 cases of central starshaped low - density shadow. The tumor were well - circumscribed, homogeneous and brown in color without haemorrhage and necrosis. On light microscopy, there was strong eosinophilic cytoplasm with granules, the tumor cells being tubular or no mitosis. The immunohistochemical staining was positive for Cytokeratin and EMA, whereas negative for Vimentin. Conclusions Renal oncocytoma is a type of benign, parenchymatous tumor, and it has no specific clinical feature. Imaging can help the diagnosis. The diagnosis can be established on histopathologic, immunohistochemical tests. Nephron sparing surgery(NSS) is the first choice treatment. Follow up is essential.