尿管動脈瘻に対するステントグラフト治療

抄録

Ureteroarterial fistula (UAF) is a direct fistulous communication between the artery and ureter. It is rare but potentially life-threatening due to the risk of massive hemorrhage. UAF is clas-sified into primary and secondary causes. UAF with secondary causes, that result from prior pelvic intervention such as surgery, radiation and ureteral stent placement, is increasing with the improvement in life expectancy of patients with pelvic malignancy. The diagnosis of UAF is often challenging because extravasation into the ureter is difficult to detect directly by diag-nostic imaging. In these days, stentgraft placement is considered as the first therapeutic option for UAF because of its low invasiveness. Although stentgraft placement is an effective method to control acute hemorrhage, the hematuria recurrence rate is relatively high. Therefore, long-term follow-up is important.