Fig. 1: Fibroma of tendon sheath. | Modern Pathology

Fig. 1: Fibroma of tendon sheath.

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

Fig. 1

Case #6. A multilobulated cellular lesion with slit-like vascular spaces and focal keloid-like fibers (A, B). Case #5. A vaguely multilobulated, hypocellular lesion with central cystic degeneration (C, lower right). The lesion is reminiscent of a desmoplastic fibroblastoma, except for more prominent vessels (D). Case #3. A relatively cellular lesion with some variation in cellularity, focal slit-like vascular spaces, and an adjacent tenosynovial sheath (E, lower right). The lesion is relatively cellular and vascularized, with nodular fasciitis-like features (F).

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