title: Mammary-type myofibroblastoma of soft tissue.
abstract: A 40-year-old woman presented with a 1 year history of a painless, subcutaneous lump on the right buttock. Clinical examination showed an approximately 6 cm large subcutaneous mass covered by apparently normal-looking skin. No inguinal lymphadenopathy was found. The mass was excised with the clinical diagnosis of fibroma. Histologically, the lesion was consistent with mammary-type myofibroblastoma of soft tissue, a very rare, benign mesenchymal neoplasm with myofibroblastic differentiation. After surgical excision she was free of recurrence over a period of 8 months. This article also challenges the theory that suggests the origin of this tumor to be from the embryonic mammary tissue, adding another case of a site other than the milk lines.
authors.affiliation: Section for Skin Pathology, Department of Cellular Pathology, PathLinks Pathology Services, Lincoln County Hospital, Lincoln, United Kingdom. nebojsa.arsenovic@ulh.nhs.uk
authors.forename: Nebojsa
authors.initials: N
authors.lastname: Arsenovic
authors.forename: Khorrum E
authors.initials: KE
authors.lastname: Abdulla
authors.forename: Kiran S
authors.initials: KS
authors.lastname: Shamim
mesh_terms: D000328:Adult; D002081:Buttocks / Q000473:pathology / Q000601:surgery; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D007150:Immunohistochemistry; D008853:Microscopy; D009379:Neoplasms, Muscle Tissue / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome