Fig. 2: Fibroma of tendon sheath. | Modern Pathology

Fig. 2: Fibroma of tendon sheath.

From: Fibroma of tendon sheath is defined by a USP6 gene fusion—morphologic and molecular reappraisal of the entity

Fig. 2

Representative images of case #2 (A), case # 13 (B), case #15 (C, D) and case #8 (E, F). Note the variation in cellularity and relatively prominent vessels in all cases. Note keloid-like fibers—focal in A and extensive in F. A lesion diagnosed as fibroma of tendon sheath (G, H) but lacking a USP6 fusion may be a scar rather than a fibroma of tendon sheath. Note poor demarcation from the surrounding fibrous tissue (H).

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