Fracture sur os pathologique révélatrice d’une myosite proliférante du muscle grand glutéal

Proliferative myositis is a benign pseudosarcomatous lesion that generally affects proximal limb muscles (often the shoulder). Its unspecific signs and symptoms, rapid growth and rarity arouse suspicion of malignancy. We report the case of a sporting woman of 28 years old who presented a fracture of the proximale left femur revealing at the histological examination a proliferative myositis of the muscle gluteus maximus. The patient refused any surgical act, the evolution was marked by the consolidation, the takeover of activity and the absence of local recurrence or metastasis.