PMC5788243_01
Contrast CT at admission. (A) Clot in the right renal pelvis. (B) Recurrence tumor (arrow). (C) Clot in the rectum.
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We were unable to identify the site of bleeding by colonoscopy or contrast-enhanced CT (Fig. 1).
Contrast CT at bleeding. (A) Contrast medium in the tumor. (B) Contrast medium in the ileum. (C) Contrast medium in the bladder.
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CT revealed a complex fistula between the right distal ureter and the right internal iliac artery (Fig. 2). Contrast medium also flowed into the recurrent tumor, as well as into the intestinal tract through the tumor.
Angiogram. (A) The right uretero-internal iliac artery fistula. (B) After embolization of the right internal iliac artery.
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Arteriography revealed a right uretero-internal iliac artery fistula, and embolization of the right internal iliac artery was performed (Fig. 3).