儿童先天性中胚层肾瘤的超微结构观察

The ultrastructural studies on congenital nesoblastic nephroma of children

本文观察了儿童先天性中胚层肾瘤（ＣＭＮ）６例，其中典型ＣＭＮ５例，富于细胞型（或不典型）ＣＭＮ１例。光镜见ＣＭＮ酷似平滑肌瘤或纤维肉瘤。电镜下ＣＭＮ的两型瘤细胞都分化良好，并具有向纤维母细胞或肌纤维母细胞分化的特点。术后１例复发，５例随访至１至１５年无肿瘤生存。

\ \ Six cases of chilerens congenital mesoblastic nephroma(CMN)were studied,including five typical CMN,and the other one fully cellular type(or atypical).The CMN is histologically similar to fibrosarcoma or Leiomyoma.Ultrastructurally,there are benign features with consistent myofibroblastic of fibroblastic differentiation.After the surgical operation,only one case suffered recrudescence.While remaining 5 cases following one to fivteen years,stll living without tunor. \ \