title: [Obstruction: a rare complication of congenital giant blue nevus].
abstract: BACKGROUND
  The blue nevus is an acquired or congenital dermal melanosis, usually small in size. It is sometimes giant and responsible for complications.
  
  
  METHODS
  A newborn had a large infiltrated blue news located on buttocks, lombosacral and perianal areas. He was admitted at the age of 3 weeks for an intestinal obstruction which was due to an impassable anal stenosis secondary to the infiltrated nevus. The tumor was excised twice, completed by plastic surgery at the age of 10 months.
  
  
  CONCLUSIONS
  This rare congenital giant blue nevus was responsible for an unreported intestinal obstruction. The risk of malignant transformation was another reason for complete excision.
mesh_terms: D001003:Anal Canal / Q000601:surgery; D001004:Anus Diseases / Q000209:etiology*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007415:Intestinal Obstruction / Q000209:etiology*; D008875:Middle Aged; D018329:Nevus, Blue / Q000150:complications* / Q000151:congenital* / Q000601:surgery; D012002:Rectal Diseases / Q000209:etiology*; D012878:Skin Neoplasms / Q000150:complications* / Q000151:congenital* / Q000601:surgery; D013518:Surgery, Plastic
vernacular_title: L'occlusion: une complication rare du naevus bleu géant congéntial en culotte.