Primary obstructive megaureter

Case contributed by Dr Domenico Nicoletti

Presentation

Ultrasound diagnosis of left renal cyst.

Patient Data

Age: 55 years
Gender: Male
MRI

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.

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Case information

rID: 53734
Case created: 3rd Jun 2017
Last edited: 20th Jun 2017
System: Urogenital
Inclusion in quiz mode: Excluded

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