Fig. 4.

A 52-year-old woman with metastatic appendiceal mucinous adenocarcinoma treated with prior surgery and chemo-RT. Sagittal ultrasound images (a) show bilateral hydroureteronephrosis with smooth, tapered, transition of the right (open white arrow) and the left (solid white arrow) proximal ureters. Coronal T2 ssFSE (b) images confirm the presence of bilateral hydroureteronephrosis and smooth, tapered narrowing of both proximal ureters (right and left—open and solid white arrows). Coronal maximum intensity projection (MIP) image from heavily weighted T2 coronal 3D MRCP (c) also depicts the bilateral hydroureteronephrosis and the areas of transition in the proximal ureters (open and solid white arrows) (B common bile duct, S stomach, C spinal canal). Overhead images (d) from bilateral retrograde urethrogram (RUG) demonstrates correlation of findings between modalities with classic features of radiation induced ureteric strictures again noting smooth, tapered margins (open and solid white arrows) of both ureters