2. 镜下见纤细的纤维母细胞样梭形细胞呈束状或波浪状排列,有时呈疏松的漩涡状或模糊的席纹状排列;瘤细胞无异型,罕见核分裂象;
3. 部分病例富于细胞,瘤细胞多呈明显的席纹状排列,间质较少;
4. 部分病例细胞稀疏,呈星状向黏液性间质内伸出细长的突起,间质含有大量的黏液;
5. 少数病例间质显著胶原化,瘤细胞呈纤细的梭形,并为粗大的胶原纤维所分隔,偶见钙化和砂粒体形成;
6.硬化性神经束膜瘤男性居多,好发于手指;大多数类型男女比例相等;
7.本瘤有高达30%的病例可出现在深部组织或内脏。
1、神经纤维瘤:S100(+)。
2、神经鞘瘤:有明显的Antoni A and B区,S100(+),EMA、GLUT-1(-)。
3、隆突性皮肤纤维肉瘤:瘤细胞向皮下浸润性生长,CD34(+),EMA(-), claudin-1(-),特征性Tt(17;22)异位涉及 COL1A1 and PDGFB。
4、孤立性纤维性肿瘤:瘤细胞漩涡生长,无固定方向,特征性的“鹿角”状血管;CD34、STAT6(+),MEA、GLUT-1(-)。
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