Nontraumatic Clostridial Myonecrosis

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Abstract
We describe three cases of nontraumatic clostridial myonecrosis seen at the Victorian Institute of Forensic Medicine. Nontraumatic clostridial myonecrosis is an uncommon and often fatal condition that requires immediate institution of appropriate medical and surgical therapy. It is most commonly caused by Clostridium perfringens and Clostridium septicum and is associated with gastrointestinal and hematologic malignancies, diabetes mellitus, and peripheral vascular disease. The clinical features include a rapidly evolving acute illness with severe pain, marked tachycardia, and brawny discoloration of the skin with bullae formation and crepitus, followed by hypotension and acute renal failure. Features at autopsy include reddish brown skin discoloration with bullae formation and necrotic skeletal muscle. Radiographs may be of use prior to the postmortem in detecting gas within the soft tissues. Gram stain and microbiologic culture are important in establishing a definitive diagnosis; although the major factors in suggesting the diagnosis are the recognition of the typical clinical history and macroscopic autopsy findings.

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