Fig. 17.

Hydronephrosis due to ureteral obstruction caused by recurrence at the primary site in a 41-year-old woman who underwent radical hysterectomy and radiation therapy.

A. CT scan demonstrates hydronephrosis of the left kidney and that the patient had undergone percutaneous nephrostomy of the right kidney. A dilated left ureter (arrow) is depicted.

B. In the lower level than in A, dilated bilateral ureters (arrows) can be traced.

C. Anterior to the rectum, an irregular shaped mass (arrowheads) encased the dilated left ureter. Pelvic side-wall extension is also visualized.