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Calcific Myonecrosis Mimicking an Invasive Soft-Tissue Neoplasm. A Case Report and Review of the Literature*
GARY L. ZOHMAN, M.D.†; JONATHAN PIERCE, B.S.†; MICHAEL W. CHAPMAN, M.D.†; ADAM GREENSPAN, M.D.†; REGINA GANDOUR-EDWARDS, M.D.†, SACRAMENTO, CALIFORNIA
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Investigation performed at the University of California, Davis, Medical Center, Sacramento
J Bone Joint Surg Am, 1998 Aug 01;80(8):1193-97
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Extract

Calcific myonecrosis has been reported as a late sequela of compartment syndrome, injury to the common peroneal nerve, and injury to the lower extremity without documented compartment syndrome or neurological injury1-8,13-19. This rare condition has been reported to occur ten to sixty-four years after the initial injury and typically presents as an enlarging mass in the anterior compartment of the leg. The characteristic radiographic appearance is that of a large fusiform soft-tissue mass in the anterior compartment, with peripheral plaque-like calcifications and usually with a well defined border. The calcifications may extend along fascial planes13. Erosion of bone had been reported in only four patients8,13. The benign radiographic appearance usually allows the lesion to be differentiated from an enlarging malignant mass in the soft tissues7. A sterile abscess usually is found at the time of operative treatment, but there is a high prevalence of chronic draining sinuses and secondary infection3,7,8,18.
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