Muscular sarcoid in the leg - A case report.

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It is well known that the nodular involvement of the muscle occurs in patients with a background disease such as sarcoidosis, tuberculosis, lepra and so on. Such nodules are histologically evaluated as non-caseating epithelioid granulomas. We experienced a curious case that had a nodule which was a non-caseating epithelioid granuloma, but without any background disease.It was a sixty-year-old female. She had suffered from a painful nodule for 2 months on the left lower leg. We first suspected a malignant tumor of soft tissue because of the findings in several examinations, but histological examination of the biopsied specimen resulted in noncaseating epithelioid granuloma. The excision was done and two other nodules appeared after 3 months at the right calf and the left thigh, respectively. Those were the same in histological examination as the previous nodule. No background disease could not be found during approximately 2 years of the observation period in spite of our careful examination. We, therefore, diagnosed as muscular sarcoid. It would seem to be a very rare case.
西日本整形・災害外科学会の論文