Interureteric distance at the level of the ureter openings in early human fetuses.

The interureteric distance at the level of the trigone of the urinary bladder was measured in 20 fetuses aged 10, 11 and 12 weeks. This distance was from 0.3 mm during 10th week to 1.2 mm at the end of the 12th week. There was no correction with sex of fetuses.