a congenital (present from birth) disorder resulting when one of the ureters, the tubes through which urine flows from the kidney to the bladder, swells and develops a pouch as it enters the bladder, causing a blockage and abnormal urine flow

a congenital saccular dilatation of the terminal portion of the ureter

a cystic dilatation of the ureter as it inserts into the bladder

a cystic dilation of the distal ureter at the level of the ureteral orifice

MS = Cystic dilatation of the ureter with ballooning of the ureteral orifice into the lumen of the bladder. AN = cystic dilat of ureter UI = D014518

the portion of the ureter closest to the bladder becomes enlarged because the ureter opening is very tiny and obstructs urine outflow; urine backs up in the ureter tube.

A cystic dilation of the bladder end of the ureter that often is obstructive. It may be ectopically placed in the bladder.

A ureterocele is a congenital abnormality found in the urinary bladder. In this condition called ureteroceles, the distal ureter balloons at its opening into the bladder, forming a sac-like pouch. It is most often associated with a double collector system, where two ureters drain their respective kidney instead of one.