title: [Atypical presentation of giant cell fibroblastoma].
abstract: BACKGROUND
  Giant cell fibroblastoma is a specific entity that belongs to the dermatofibrosarcoma protuberans spectrum. We report an original case with an atypical clinical presentation.
  
  
  METHODS
  A four-year-old male child presented with a perineoscrotal mass, present since the age of one year. This lesion was initially a bluish perineal macule that grew rapidly after a traumatic injury. Physical examination showed a large flaccid bi-lobed tumour originating from the posterior border of the left of the scrotum to the anal margin. A haemolymphangioma was clinically suspected and the results of ultrasound and MRI were consistent with this diagnosis. Because of the discomfort and the atypical clinical presentation, local surgical resection was performed. Histological examination did not confirm the clinical assumption but revealed a giant cell fibroblastoma. Because of the location of this tumour, a secondary surgical procedure was carried out using the "Slow-Mohs" technique.
  
  
  CONCLUSIONS
  This case is particularly interesting because of the clinical pseudo-angiomatous presentation of this tumour. Use of the "Slow-Mohs" technique allowed sparing of tissue. No recurrence was noted after 3 years of follow-up.
authors.affiliation: Clinique de dermatologie, hôpital Claude-Huriez, CHRU de Lille, université de Lille, 1, rue Michel-Polonovski, 59037 Lille cedex, France.
authors.forename: S
authors.initials: S
authors.lastname: Buche
authors.forename: E-M
authors.initials: EM
authors.lastname: Delasalle
authors.forename: J-M
authors.initials: JM
authors.lastname: Coindre
authors.forename: F
authors.initials: F
authors.lastname: Pédeutour
authors.forename: F
authors.initials: F
authors.lastname: Kolb
authors.forename: D
authors.initials: D
authors.lastname: Staumont-Salle
authors.forename: L
authors.initials: L
authors.lastname: Mortier
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D002675:Child, Preschool; D018223:Dermatofibrosarcoma / Q000737:chemistry / Q000151:congenital / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D003952:Diagnostic Imaging; D005834:Genital Neoplasms, Male / Q000737:chemistry / Q000151:congenital / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006391:Hemangioma / Q000175:diagnosis; D006801:Humans; D008202:Lymphangioma / Q000175:diagnosis; D008297:Male; D015580:Mohs Surgery; D015514:Oncogene Proteins, Fusion / Q000032:analysis; D010502:Perineum / Q000473:pathology* / Q000601:surgery; D012611:Scrotum / Q000473:pathology* / Q000601:surgery
chemical_list: D014408:Biomarkers, Tumor; C120892:COLIA1-PDGFB fusion protein, human; D015514:Oncogene Proteins, Fusion