title: Proliferating Myositis: An Inflammatory Lesion often Misdiagnosed as A Malignant Tumor.
abstract: 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.
authors.forename: Fariba
authors.initials: F
authors.lastname: Binesh
authors.forename: Mohammad
authors.initials: M
authors.lastname: Sobhanardekani
authors.forename: Somayeh
authors.initials: S
authors.lastname: Zabihi
authors.forename: Nasim
authors.initials: N
authors.lastname: Behniafard
mesh_terms: D000368:Aged; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D007866:Leg; D008279:Magnetic Resonance Imaging; D019042:Muscle Neoplasms / Q000175:diagnosis*; D009220:Myositis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D012509:Sarcoma / Q000175:diagnosis*