Ultrasound vs. Computed Tomography for Severity of Hydronephrosis and Its Importance in Renal Colic

Abstract

Using an ultrasound-first approach to detect hydronephrosis may help physicians identify patients with renal colic. The lack of hydronephrosis on ultrasound makes the presence of a larger ureteral stone less likely. Stone size >5mm may be a useful predictor of 30-day events.