Day: July 20, 2023

Infant with right hydronephrosis on prenatal US

VCUG of ectopic ureterocele
AP images from a voiding cystourethrogram (above) show a lucent filling defect in the base of the bladder. Oblique image (below) shows reflux into an extremely dilated right renal collecting system. The right ureter inserts into a dilated structure that is inside and outside of the bladder.

The diagnosis was a right ectopic ureterocele causing vesicoureteral reflux Grade V in a patient with a right duplicated kidney.