title: Giant fibrosarcoma arising in dermatofibrosarcoma protuberans on the scalp during pregnancy.
abstract: BACKGROUND
  Dermatofibrosarcoma protuberans (DFSP) is a low-grade malignant soft tissue tumor of subcutaneous tissues that has a propensity for local recurrence; however, it seldom metastasizes. Most lesions occur over the trunk or proximal extremities, and there is slight male preponderance. DFSP is rare on the head and neck. Less than 5% tumors are located on the scalp.
  
  
  OBJECTIVE
  To describe a case of giant fibrosarcoma arising in DFSP on the scalp during pregnancy.
  
  
  METHODS
  In our patient, the tumor was on scalp and measured 15 x 11 x 7 cm. The recurrent tumor that developed in the same region was measured 33 x 30 x 15 cm. Histopathologic examination of this mass revealed fibrosarcoma. The mass was excised from the subperiosteal plane with a 3-cm free margin. Because of the high possibility of recurrence, the defect site was reconstructed with a split-thickness skin graft.
  
  
  RESULTS
  After 1 year of follow-up, no recurrence or metastasis was detected.
  
  
  CONCLUSIONS
  We present a unique case in which the person has a giant fibrosarcoma on her scalp arising from DFSP with fibrosarcomatous change during pregnancy.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Dr. Lütfi Kirdar Education and Research Hospital, Istanbul, Turkey. drbariscakir1@hotmail.com
authors.forename: Bariş
authors.initials: B
authors.lastname: Cakir
authors.forename: Aykut
authors.initials: A
authors.lastname: Misirlioğlu
authors.forename: Kaan
authors.initials: K
authors.lastname: Gideroğlu
authors.forename: Tayfun
authors.initials: T
authors.lastname: Aköz
mesh_terms: D000328:Adult; D018223:Dermatofibrosarcoma / Q000473:pathology* / Q000601:surgery; D005260:Female; D005354:Fibrosarcoma / Q000473:pathology* / Q000601:surgery; D006258:Head and Neck Neoplasms / Q000473:pathology* / Q000601:surgery; D006801:Humans; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic / Q000473:pathology* / Q000601:surgery; D012535:Scalp; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery; D016038:Skin Transplantation; D012983:Soft Tissue Neoplasms / Q000473:pathology* / Q000601:surgery