Biomedical subjects
Publications and source records attributed to R D Suh.
A ureteric ring is a smooth, concentric ring-like narrowing occurring in the upper third of the ureter. It is nonobstructive and may be transient and bilateral. There is a slight female preponderance. They are seen in all age groups and are common in the neonate together with transient changes. A ureteric ring has a characteristic appearance and is believed to result from contraction of circular muscle.
Balloon occlusion hepatic venography using carbon dioxide (CO2) is proposed as a safer yet simpler alternative to wedged catheter techniques that have caused hepatic lacerations during the transjugular intrahepatic portosystemic shunt (TIPS) procedure. The image quality of CO2 wedged catheter and balloon occlusion venograms was comparable in our small series, with no venographic-related complications occurring in the balloon occlusion group.