title: [Sacral chordoma: a rare tumor of the buttocks].
abstract: BACKGROUND
  Described and recognized for the first time as a pathological entity by Virchow in 1857, chordoma is a tumour of embryonic origin secondary to an attack of the notochord. In most cases it is asymptomatic, resulting in fairly late diagnosis.
  
  
  METHODS
  We report the case of a 62-year-old patient presenting a bulky tumefaction, nodular in places, not very painful, and extending towards the anal area, scrotum and the posterior aspect of the upper left thigh. Histopathological examination of a macrobiopsy sample of this tumefaction pointed to chordoma. On magnetic resonance imaging (MRI), the tumour presented multiple ramifications extending towards the scrotal area, the sciatic area and the posterior aspect of the left thigh. Palliative tumorectomy was performed. Given the very slow progression of the tumour and the risk of adverse effects in such a large tumoral exposure field, radiotherapy was ruled out.
  
  
  CONCLUSIONS
  This is a typical observation of a rare tumour that dermatologists may encounter.
authors: Service de chirurgie générale, hôpital Habib Bourguiba, Sfax, Tunisie. ahmedguirat@yahoo.fr
authors: A
authors: A
authors: Guirat
authors: N
authors: N
authors: Affes
authors: S
authors: S
authors: Boujlbene
authors: K
authors: K
authors: Abbes
authors: N
authors: N
authors: Gouiaa
authors: H
authors: H
authors: Daoud
authors: M
authors: M
authors: Issam Beyrouti
mesh_terms: D001859:Bone Neoplasms / Q000473:pathology*; D002081:Buttocks; D002817:Chordoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D012447:Sacrum / Q000473:pathology* / Q000601:surgery