Fig. 5: A case of proliferative myositis (case 5).
From: Recurrent FOS rearrangement in proliferative fasciitis/proliferative myositis
a Entrapping skeletal muscle fibers, large epithelioid cells are observed. b The epithelioid cells are intensely positive for c-FOS immunostaining. c The epithelioid cells harbor FOS gene rearrangements as detected by FISH (arrows indicate split 3′ and 5′ probes).
