Fig. 3: Representative images of two desmoplastic fibroblastomas. | Modern Pathology

Fig. 3: Representative images of two desmoplastic fibroblastomas.

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

Fig. 3

A relatively hypocellular and hypovascular lesion (A), with a small area of moderate cellularity (B). Different areas of another lesion (C–E) with diffuse nuclear positivity for FOSL1 in tumor cells (F). Note relatively finely fibrillar fibroedematous to focally myxoid (D) matrix and a relatively uniform population of stellate cells in both lesions.

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