后肾腺瘤1例并文献复习

Metanephric Adenoma:A Case Report and Review of Literature

目的探讨后肾腺瘤的临床、病理形态学特征及诊断要点。方法采用常规HE染色及免疫组化染色,并复习相关文献进行总结。结果后肾腺瘤由紧密而规则排列的圆形小管状、乳头状腺体构成,含有圆形细胞巢的实性区域相间构成,偶可见肾小球样结构。免疫组化结果:Vimentin、CK阳性及EMA阴性为特点。结论后肾腺瘤是一种罕见的胚胎性上皮源性良性肿瘤,常被误诊为恶性肿瘤,应与肾母细胞瘤、乳头状肾细胞癌等鉴别。

Objective To explore the clinical and histopathological characteristics of the metanephric adenoma and the criteria for its pathological diagnosis. Methods A case was stained HE and immunohistochemistry. Results This tumor consist of tubular, papillary and glomeru-loid-like formation. Immunohistochemically, vimentin and CK were positive, the EMA was negative. Conclusion Metanephrlc adenoma is a rare benign tumor that originates from the remnants of metanephric tissues and is often diagnosed as malignancy. It is very important to distinguish it from Wilms＇tumor and renal cell carcinoma.