Background: Although renal colic in children in the United States remains relatively uncommon compared to in adults, its incidence has nearly doubled from 1999 to 2008. Noncontrast computed tomography (CT) is the current standard for the evaluation of suspected renal colic, given its high sensitivity and specificity. However, the greater lifetime risk of radiation-induced cancer from CT in pediatric patients has led to efforts to minimize radiation exposure. Additionally, pediatric renal colic is often recurrent, which might require multiple imaging studies during their lifetime. Point-of-care ultrasound (POCUS) by emergency physicians avoids radiation, has a low marginal cost, can be performed concurrently with other management, and allows for earlier diagnosis and more rapid treatment of renal colic. Adult randomized controlled trial evidence supports using POCUS as the initial approach to imaging and management of suspected renal colic. However, there remain limited data on POCUS in children for renal colic.
Case report: This is a case series where the sonographic findings of hydronephrosis, ureteral jets, "twinkling artifact," and the identification of urinary tract stones were used to evaluate adolescent and pediatric patients with renal colic. We report five cases of renal colic in adolescent and pediatric patients where urolithiasis was confirmed by using POCUS and irradiation by CT was avoided in all 5 patients. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: POCUS can provide information about the presence or absence of urinary tract stones as well as obstruction of the collecting system without the cost and radiation exposure of CT.
Keywords: emergency medicine; pediatrics; point-of-care; renal colic; ultrasonography; urolithiasis.
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