proliferative fasciitis
Histologic Features
- A poorly circumscribed deep-seated lesion with stellate pushing borders characterized by
- Large pleomorphic polygonal fibroblasts (ganglion cell-like) with abundant eosinophilic cytoplasm, pale paranuclear zones and inclusion-like nucleoli
- Some giant cells with abundant basophilic cytoplasm
- Focal mucinous areas in the stroma
- Extravasated erythrocytes and inflammatory cells
- A prominent collagenous stroma (a longstanding lesion)
Updated Wednesday, July 31, 2013 8:30:48 PM