Histology Course S IX 18 Department of Pathology, University of Zurich Histology Course

S IX 18 fibromatosis  HE  
  ICD-10: M72.9

14-year-old girl, strand-like induration in the gluteal area which had been excised multiple times before. New excision.

- Nodular, fascicular lesion, consisting of collagenous fibres of varying calibre (depending of age of the lesion) and fibroblasts
- No polymorphism, no or very few mitoses.