To demonstrate normal variants and mimics of periumbilical structures
To illustrate a wide variety of umbilical disorders
A. Review of embryologic and anatomical features of the umbilicus
B. CT findings of normal variants of the periumbilicus.
1) Ligamentum teres, paraumbilical veins and hepatic falciform arteries in the falciform ligament,
2) Urachal remnants and obliterated umbilical arteries in the preperitoneal space.
C. CT or MRI findings of a wide spectrum of umbilical diseases.
1) Urachal congenital anomalies
2) Infected urachal remnants
3) Omphalomesenteric duct anomalies attached to the umbilicus
4) Recanalized paraumbilical vein in Cruveilhier-Baumgarten syndrome
5) Portosystemic collateral veins related with embryologic vitellointestinal vessels connecting the ileal branch to the umbilicus
6) Traumatic injury of the hepatic falciform artery
7) Malignant umbilical tumors
Isogai, J,
Kaneko, J,
Tezuka, M,
Katada, Y,
Imaging of Umbilicus in Adults. Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL.
http://archive.rsna.org/2014/14001669.html