Toddler with constipation and urinary retention

BE of presacral neuroblastoma
Lateral image from a barium enema performed after an intravenous pyelogram (below) shows anterior displacement and compression of the bladder (to the left of the image) and rectum (in the middle of the image) by a presacral mass. The scout image (above) showed the mass was not calcified.

The diagnosis was presacral neuroblastoma.