Fig. 3From: Fibroma of tendon sheath located within the ankle joint capsulea H&E ×10, the lesion appears to be circumscribed and surrounding tissues (right) are compressed by its growth. Cellularity is poor. b H&E ×25, tumor cells appear to be spindle-shaped and surrounded by abundant collagenic matrix. c H&E ×40, tumor cells appear to be fibroblasts with no evidence of atypical patternsBack to article page