Presentation
Renal colic.
Patient Data
Age: 70 years
Gender: Male
From the case:
Bifid ureter
Frontal

Contrast from prior CT scan. Incidental note of duplex collecting system on the left with ureteric duplication that unites prior to emptying into the bladder.
Case Discussion
Bifid ureter is a variant of a duplex renal collecting system, where there are two ureters that unite before draining into the bladder via a single ostium.