PMC3810679_01
A) Extensive fat necrosis from soft tissue of forearm with neutrophilic infiltrate and several irregular broad fungal hyphae. (PAS stain x200) B) Irregular thick fungal hyphae with rare septa invading the walls of blood vessels, a feature of mucor fungal infection. (PAS stain x400)
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Histopathological examination of the debrided soft tissue revealed necrotic subcutaneous fat and skeletal muscle fibers invaded by broad hyphae, irregularly branched, with rare septations suggestive of mucormycosis (Figure 1A and 1B).