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Query: UMLS:C0027121 (myositis)
 4,538 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Fibromatosis is a heterogenous group of soft tissue neoplasias, only some forms of which occur in the head and neck region. In the pathological classification it takes place between the fibroma and fibrosarcoma. With nodular fasciitis, it's subspecies myositis proliferans and aggressive fibromatosis exist differential diagnostic difficulties, especially as it's difficult to exclude fibrosarcoma. The benign myositis proliferans gives an impression of a malignant process by it's rapid proliferation, cell-polymorphia and high mitotic activity. The monomorphous histological picture and the slower proliferation of the aggressive fibromatosis, however can simulate a benign tumor, although thought to be semimalignant. 3-case-reports point out these characteristics. Complete excision is the therapy advised for all fibromatosis. In aggressive fibromatosis a large enough healthy area is the best condition to prevent recidives.
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PMID:[Diagnosis and therapy of fibromatosis in head and neck region (author's transl)]. 722 44

Heterotopic ossification is a benign, ectopic bone growth that develops in muscle and other soft tissue. The exact cause is poorly understood, but it is a rarely serious complication of soft tissue trauma. Its most common form, myositis ossifications traumatica, occurs as a secondary complication of direct muscle injury. However, other forms are less common and can result from specific pathologic conditions, such as spinal cord trauma and metabolic disorders. In patients who have had spinal cord injury and subsequent paraplegia, heterotopic ossification often results in ankylosis of the hip and a loss in range of motion. Ectopic ossification occurs below the injury site, and, although the specific muscle groups can vary, it usually involves those for which the origin and insertion involve the anterior pelvis and proximal femur. In dried bone, heterotopic ossification can appear as a smooth, irregularly shaped benign tumor of mature bone, extending from the surface but not invading the cortical bone. These tumors range in size from a few millimeters to several centimeters. Because heterotopic ossification is often associated with specific types of injuries, it has a unique anthropological use in forensic cases.
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PMID:Heterotopic ossification in unidentified skeletal remains. 1139 50

Background: Myositis ossificans is an extraosseous, benign tumor-like condition characterized by prominent heterotopic ossification. Cystic degeneration in myositis ossificans is an uncommon entity. Case report: A 13-year-old girl presented with a large and painful breast lump. Physical examination revealed a mobile, hard mass, clinically resembling a fibroadenoma. The mass was excised and diagnosed as myositis ossificans with central bone cyst like changes. Conclusion: Our case represents the first myositis ossificans case with central bone cyst like changes in a child.
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PMID:Solitary Bone Cyst Like Areas in Myositis Ossificans: A Breast Mass in a Child. 3175 81