A member asked:

What is left mega urethra and unilateral hydronephrosis? what causes it?

A doctor has provided 1 answer
Dr. James Lin answered

Here are some...: Oftentimes, the described condition is a congenital anomaly resulting from poorly innervated distal atonic ureter, which is usually found incidentally on imaging studies for other reasons. Such adynomic segment and resulting massive ureteral dilation is prone to bleed upon trauma and to induce bacterial UTI so to precipitate active evaluation. More? Ask urologist or radiologist timely.

Answered 7/26/2016

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