Two cases of paraumbilical vein aneurysm are reported. The patients were diagnosed as having cirrhotic liver with portal hypertension. Angiography and contrast-enhanced computed tomography demonstrated a dilated paraumbilical vein arising from the left branch of the portal vein. Furthermore, localized dilatation of a paraumbilical vein was demonstrated. The focal aneurysmal dilatation of the dilatated paraumbilical vein is rare.
References
1.
Nunez D.Jr , Russel E., Yrizarry J., et al: Portosystemic communications studied by transhepatic portography. Radiology127:75-79, 1978.
2.
Hoevels J., Lunderquist A., Tylén U., et al: Portosystemic collaterals in cirrhosis of the liver. Acta Radiol Diagn20:865-877, 1979.
3.
McCain AH, Bernardino ME, Sones PJJr, et al: Varices from portal hypertension: Correlation of CT and angiography . Radiology154:63-69, 1985.
4.
Aagaard J., Jensen LI, Sorensen Tia, et al: Recanalized umbilical vein in portal hypertension. Am J Roentgenol139:1107-1110, 1982.
5.
Lafortune M. , Constantin A., Breton G., et al: The re-canalizing umbilical vein in portal hypertension: A myth. Am J Roentgenol144:549-553, 1984.
6.
Morin C., Lafortune M., Pomier G., et al: Patent paraumbilical vein: Anatomic and hemodynamic variants and their clinical importance. Radiology185:253-256, 1992.
7.
Hagiwara H., Kasahara A., Kono M., et al: Extrahepatic portal vein aneurysm associated with a tortuous portal vein. Gastroenterology100:818-821, 1991.
8.
Ohhira M., Ono M., Ohhira M., et al: Splenic vein aneurysm: A case report of a lesion that progressively expanded. Br J Radiol67:656-658, 1994.
9.
Stuck KJ, Rubin JM, Gubin B.: Aneurysm of a paraumbilical collateral vein. J Ultrasound Med7:639-642, 1988.
