Imaging Diagnosis of Primary Non-obstructive Megaureter(A Report of 28 Cases) / 实用放射学杂志

ABSTRACT

Objective To improve recognition and diagnosis of primary non-obstructive megaureter.Methods The authors analyzed the X-ray findings of intravenous urography and B-ultrasonographic manifestations of 28 cases with primary non-obstructive megaureter proved by varied examinations and operations.Results The X-ray and B-ultrasonographic manifestations as followsin the terminal ureter,there was a short segment,less than 3 cm in length,with normal caliber but adynamic to micturition and the ureter proximal to the adynamic segment was secondarily dilated remarkably.The terminal end of the dilated ureter appeared as drumstick shaped,spindle-shaped,snakehead shaped or rattail shaped.On right time fluoroscopy and B-ultrasonographic observation,a decrease of peristalsis frequency,increase of peristalsis range,interrupted downward convey of peristalsis wave could be noted.Conclusion The contrast urography is the main method,B-ultrasonography and cyctocopy are helpful for the diagnosis of primary non-obstructive megaureter.