向骨骼肌方向分化是一种十分少见的现象但却普遍存在于人类多种肿瘤中。作者观察了 3例含有横纹肌母细胞成分的神经内分泌癌的病理特征。3例中男性 2例 ,分别为 77岁和 75岁 ,发生于臀部皮下组织和膀胱 ;女性 1例 ,70岁 ,发生于左侧鼻腔内。瘤体小者为 3 5ｃｍ皮下结节 ,大者充 Differentiation toward skeletal muscle is a very rare phenomenon but is widespread in many human tumors. The authors looked at the pathological features of three neuroendocrine carcinomas that contain striated muscle cells. Two of the three men, aged 77 and 75 years, respectively, developed in the subcutaneous tissue of the buttocks and in the bladder. One woman, 70 years of age, developed in the left nasal cavity. Small tumor is 35cm subcutaneous nodules, the largest charge