A CASE OF HYPOPLSIA OF THE RIGHT EXTERNAL ILIAC ARTERY

Abstract

A case of focal arterial hypogenesis of the external iliac artery in a 71-year-old man is reported. The patient suffered from cold sensation in the right leg and intermittent claudication since he was 45years old. In April, 1994, he was referred to the hospital because complete obstruction of the right common iliac artery was indicated on MR angiography at another hospital. On arterial angiography, the right common iliac artery was completely obstructed, and the common iliac artery was imaged by the route of a collateral vessel. A diagnosis of arteriosclerosis obliterans was made and he underwent an operation on July 5, 1994. The external iliac artery became narrow and small from just after the bifurcation of the internal iliac artery, and its diameter was 4mm. The internal space of the artery was completery obstructed. Using Woven Double Verour 8mm, an aortofemoral (right) bypass was performed. Histopathologically the internal elastic plate in the hypogenetic region was retained whole-circumferentially that revealed the difference from ordinary tissue changes in arteriosclerosis. On the basis of these observations, patient was diagnosed as having hypogenesis of right external iliac artery accompanied by arteriosclerosis postoperative couse was unoventful. There has been neither intermittent claudication nor cold sensation in the leg as of about 3years after the operation. Hypoplasia of the artery is so rase that only six cases have been reported in this country.