Fig. 1
From: Atypical cellular neurothekeoma: a case report with a novel NF1 mutation
Microscopic appearance of atypical cellular neurothekeoma. (A) Dermal tumour sparing overlaying skin by a “Grenz zone” (H&E; x40 magnification). (B) Multinodular growth pattern and biphasic appearance (H&E; x40 magnification). (C) Focally infiltrative margins dissecting dermal collagen (H&E; x100 magnification). (D) Bright collagen strands separating nests and single tumour cells (H&E; x400 magnification). E-F) Hypercellular nodules showing fascicular growth pattern of spindled and epithelioid cells in a variably collagenous background (H&E; x100 magnification)