Primary obstructive megaureter

Case contributed by Dr Domenico Nicoletti


Ultrasound diagnosis of left renal cyst.

Patient Data

Age: 55 years
Gender: Male

Marked dilatation of the left ureter with atrophic ipsilateral kidney.

Case Discussion

The presence of a distal ureteral aperistaltic segment is the most common cause of megaureters. If the end portion of the urethra does not transmit the peristaltic wave or does not dilate enough to allow the free passage of urine, it results in upstream urethral dilation. Ureteral peristalsis waves become less effective in the course of time even due to dilatation. This together with possible urinary stasis infections could damage the renal parenchyma.

Case courtesy Prof Fabio Denicolò.

PlayAdd to Share

Case information

rID: 53734
Published: 3rd Jun 2017
Last edited: 14th Aug 2019
System: Urogenital
Inclusion in quiz mode: Excluded

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.