01/08/2026
The ureters are an important part of an endometriosis ultrasound assessment.
What I find fascinating is that during ultrasound, we can assess them dynamically and actually watch them working in real time. We wait to see the natural wave-like movement, called peristalsis, as urine passes down towards the bladder.
This can help us assess whether the ureter is moving normally and look for any narrowing, distortion or endometriosis nodules involving or close to this area.
It is such a small structure, but an important one to assess carefully, particularly as ureteric endometriosis can sometimes be present without obvious urinary symptoms. It was also one of the hardest structures for me to learn to identify, as they can be difficult to spot.
PubMed: https://pubmed.ncbi.nlm.nih.gov/30479023/