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Hydronephrosis

 


BASICS

DESCRIPTION

  • Hydronephrosis refers to a structural finding—dilatation of the renal calyces and pelvis.

    • May occur with urinary tract infection (UTI), vesicoureteric reflux (VUR), high urine outpu...

DIAGNOSIS

Symptoms vary according to cause, chronicity, location, and degree of obstruction. 

HISTORY

  • Although often asymptomatic, hydronephrosis can be associated with pain ranging from vague, intermit...

TREATMENT

GENERAL MEASURES

  • Medical treatment: correction of fluid and electrolyte abnormalities, pain control, antibiotics as an adjunct to drainage if infection present

  • Relief of obstruction: prompt dr...

ONGOING CARE

FOLLOW UP RECOMMENDATIONS

  • Serial monitoring of kidney function (electrolytes, BUN, and creatinine) and BP until renal function stabilizes. Frequency of monitoring depends on severity of re...

ADDITIONAL READING

Shen P, Jiang M, Yang J, et al. Use of ureteral stent in extracorporeal shock wave lithotripsy for upper urinary calculi: a systematic review and meta-analysis. J Urol.  2011;1...

CODES

ICD10

  • N13.30 Unspecified hydronephrosis

  • N13.39 Other hydronephrosis

  • Q62.0 Congenital hydronephrosis

  • N13.2 Hydronephrosis with renal and ureteral calculous obstruction

  • N13.1 Hydronephrosis w ureteral ...

CLINICAL PEARLS

  • US and noncontrast CT identify most causes of hydronephrosis.

  • Relief of obstruction, when present, is the primary treatment.

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