title: [Proliferating myositis].
abstract: A clinico-morphological analysis of 6 cases of proliferating myositis is presented. The patients varied in ages from 31 to 59 years. All the patients reported an extremely rapid growth of swellings: the period from the moment of the "tumour" detection to the operation was within 1 month, and in 4 cases 2 weeks. The main features of the microscopic structure of proliferating myositis included marked proliferation of fibroblasts and random arrangement of large cells with basophilic cytoplasm resembling rhabdomyoblasts and ganglionic cells. A detailed clinico-morphological analysis of the disease permits to differentiate proliferating myositis from similar soft tissue neoplasms (embryonal rhabdomyosarcoma, ganglioneuroblastoma, fibrosarcoma, extraabdominal desmoid, nodular fascitis).
mesh_terms: D000328:Adult; D003238:Connective Tissue / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005347:Fibroblasts / Q000473:pathology; D005350:Fibroma / Q000175:diagnosis; D005354:Fibrosarcoma / Q000175:diagnosis; D005729:Ganglioneuroma / Q000175:diagnosis; D006801:Humans; D008297:Male; D008875:Middle Aged; D009132:Muscles / Q000473:pathology; D009220:Myositis / Q000175:diagnosis / Q000473:pathology*; D011379:Prognosis; D012208:Rhabdomyosarcoma / Q000175:diagnosis
vernacular_title: Proliferiruiushchiiĭ miozit.