肾脏混合性上皮和间质肿瘤是一种罕见的复杂肿瘤,作者分析53例该肿瘤(女性46例、中位年龄49岁)的大体观察、组织形态学及免疫组化特征。大体观察最常见的表现是实性和囊性(47%)。最常见的间质类型为少细胞的纤维性间质和富于细胞的梭形细胞间质,其次是伴平滑肌分化的间质、水肿样间质和出现脂肪组织;少细胞的纤维性间质和脂肪组织更常见于体积较大的肿瘤(P=0.003、P=0.04);富 Kidney mixed epithelial and stromal tumors are a rare and complex tumor. The authors analyzed the gross observation, histomorphology and immunohistochemical characteristics of 53 patients with this tumor (46 women, median age 49 years). The most common observations of gross observation are solidity and cystic (47%). The most common interstitial types were interstitial fibroblasts with less cells and spindle cells with cell-rich stroma, followed by mesenchymal, edematous stroma and adipose tissue with smooth muscle differentiation; less interstitial fibroblasts And adipose tissue were more common in the larger tumors (P = 0.003, P = 0.04);