软组织，炎性肌纤维母？讨论病例【91360，软组织618】

刘伟

一公里生命
病例（形态）分享第589例
70yo F colon

It is unsolvable (even with position, position, position & history, history, history) unless you have ready access to difficult to justify/expensive ancillary tests

After knowing result of FISH, retrospectoscope says morphology fairly typical

Thoughts?



朱正龙
炎性肌纤维母？

一公里生命
FISH -> NTRK3 rearrangement
Points:
1. NTRK IHC not very sensitive for NTRK3

2. NTRK sarcomas may be MPNST/fibrosarcoma-like (esp NTRK3)


3. CD34+veS100+ve clue *but inconstant*