Binesh Fariba, Sobhanardekani Mohammad, Zabihi Somayeh, Behniafard Nasim
Rom J Intern Med. 2016 Dec 1;54(4):243-246. doi: 10.1515/rjim-2016-0037.
Proliferative myositis (PM) is a rare inflammatory disease. Most commonly, the lesion occurs in the extremities. Regarding its fast growth and bizarre shape of the cellular components this entity commonly misdiagnosed and the patients undergo improper therapeutic approaches. In other words, it is often misdiagnosed as sarcoma. The diagnosis can only be made by the microscopic examination, so biopsy is mandatory. Here the authors report a patient with PM who was initially misdiagnosed as pleomorphic sarcoma of the lower extremity and explain this rare entity. Proliferative myositis should be taken into account if a fast growing, intramuscular mass occurs in the extremities.
增殖性肌炎（PM）是一种罕见的炎症性疾病。最常见的情况是，病变发生在四肢。鉴于其生长迅速且细胞成分形态怪异，该疾病常被误诊，患者接受不恰当的治疗方法。换句话说，它常被误诊为肉瘤。只有通过显微镜检查才能做出诊断，因此活检是必需的。本文作者报告了一名最初被误诊为下肢多形性肉瘤的增殖性肌炎患者，并对这种罕见疾病进行了解释。如果四肢出现生长迅速的肌内肿块，应考虑增殖性肌炎。
