Umbilical venous dilatation is a rare entity and often tends to occur as an isolated finding 4.
It can arise from a number of patholgies
- umbilical venous varix (UVV): particularly if focal
- fetal hydrops: a focal dilatation due to an umbilical venous varix with an ensuing thrombosis can also give to fetal hydrops as a consequence 5.
- increased risk of umbilical venous thrombosis 3
Further work up
It is often recommended to follow-up these abnormalities to exclude haemodynamic deterioration or cardiac failure 1.
- 1. Prefumo F, Thilaganathan B, Tekay A. Antenatal diagnosis of fetal intra-abdominal umbilical vein dilatation. Ultrasound Obstet Gynecol. 2001;17 (1): 82-5. doi:10.1046/j.1469-0705.2001.00250.x - Pubmed citation
- 2. Baytur YB, Ozcakir HT, Lacin S et-al. Fetal intra-abdominal umbilical vein dilatation associated with notching in umbilical artery. Arch. Gynecol. Obstet. 2005;271 (2): 160-2. doi:10.1007/s00404-004-0608-z - Pubmed citation
- 3. Nitsch P, Breuer J, Geipel A et-al. Dilatation of the abdominal umbilical vein is associated with increased risk of thrombotic complications. J Perinat Med. 2006;34 (3): 217-9. doi:10.1515/JPM.2006.039 - Pubmed citation
- 4. Mantas N, Sifakis S, Koukoura O et-al. Intraabdominal umbilical vein dilatation and term delivery. A case report and review of the literature. Fetal. Diagn. Ther. 2007;22 (6): 431-4. doi:10.1159/000106349 - Pubmed citation
- 5. Nyberg DA, McGahan JP, Pretorius DH. Diagnostic imaging of fetal anomalies. Lippincott Williams & Wilkins. (2003) ISBN:0781732115. Read it at Google Books - Find it at Amazon