Fig. 1

Hematoxylin and eosin (H&E)-stained biopsy of the affected muscle. a Coagulative necrosis in the muscle in subcutaneous tissue plane (arrow). Original magnification, × 100. b Tissue infiltrated with neutrophils, lymphocytes, and plasma cells. Original magnification, × 200. c Skeletal muscle tissue infiltrated with lymphocytes and areas of fibrosis. Original magnification, × 100. d A granuloma with Langhans-type giant cell in the subcutaneous tissue (arrow). Original magnification, × 200