megaureter
Pronunciation: MEG-ah-you-REE-ter
Abnormal dilation of the ureter, classified as primary or secondary, obstructive or non-obstructive.
Full Definition
Megaureter refers to a ureter with a diameter exceeding normal parameters for the child's age, typically greater than 7mm in neonates. Primary megaureter results from intrinsic ureteral abnormalities, while secondary megaureter occurs due to bladder dysfunction or obstruction. The condition may be obstructive, requiring surgical intervention, or non-obstructive, managed conservatively. Diagnosis relies on imaging studies including ultrasound and specialized urological investigations. The term appears frequently in pediatric urology reports and requires careful distinction from other causes of urinary tract dilation.
Usage
Usage note: Always specify whether primary or secondary, obstructive or non-obstructive when documented.
In Context
- "Imaging revealed bilateral megaureter with evidence of functional obstruction." — Radiology report
- "The patient's primary megaureter showed progressive improvement on conservative management." — Follow-up clinic note