Muscle biopsy from a patient with spontaneous gangrenous myositis due to Streptococcus pyogenes (group A Streptococcus). Left panel: Necrotic muscle fibers with numerous infiltrating leukocytes. Right panel: Gram stain shows gram-positive bacteria in an area of muscle necrosis.
Courtesy of Larry M Baddour, MD.
Graphic 53989 Version 3.0
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