title: [Abnormal features of the sub renal portion of the inferior vena cava].
abstract: OBJECTIVE
  to determine the frequency of the abnormal anatomical features affecting the inferior vena cava (IVC).
  
  
  METHODS
  we performed 161 dissections of the ICV on fresh (145) or formaldehyde-injected (16) cadavers. There were 86 men and 75 women.
  
  
  RESULTS
  we found two abnormalities of the IVC: one left IVC in a woman and one double IVC in a man. These malformations can be explained by the embryology of the IVC.
  
  
  CONCLUSIONS
  the frequency of abnormalities of the IVC is highly variable according to the studies: Richardson (1983) found 3% for the duplication of the IVC. Other malformations have been reported: double IVC, left IVC or right IVC with azygos prolongation. We never observed such associations in our study. Left IVC could be explained by the development of the left supra-cardinal vein and by that of the left sub-cardinal and intercardinal anastomoses. Double IVC corresponds either to the development of the left supra-cardinal vein or to the persistence of the left cardinal vein or the left sub-cardinal vein.
  
  
  CONCLUSIONS
  abnormalities of the ICV dysplay different anatomical features due to the complexity of the embryogenesis of this vessel; their frequency is far from being rare. Unknowing these abnormalities could lead to severe haemorrhages during surgical interventions on the retroperitoneal, cardiac or oesophageal regions.
authors: Laboratoire d'anatomie Faculté de médecine de Pharmacie et d'Odonto-Stomatologie de Bamako, Hôpital du Point G Service de Chirurgie B, BP 333, Bamako, Mali. ongoiba.nouhoum@caramail.com
authors: N
authors: N
authors: Ongoïba
authors: C
authors: C
authors: Destrieux
authors: J
authors: J
authors: Desme
authors: A K
authors: AK
authors: Koumare
mesh_terms: D000328:Adult; D002102:Cadaver; D005260:Female; D006801:Humans; D007668:Kidney; D008297:Male; D014682:Vena Cava, Inferior / Q000002:abnormalities*