Sunday, August 2, 2015

Q: In which conditions hydronephrosis may occur without urinary obstruction?


Answer:  

Conventional wisdom is that hydronephrosis occurs only with urinary obstruction but hydronephrosis may occur without urinary obstruction when patient is prone to a large diuresis, which may distend the intrarenal collecting system, like in congenital nephrogenic diabetes insipidus.

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