TY - CHAP M1 - Book, Section TI - Hydronephrosis and Ureteropelvic Junction Obstruction A1 - Chuang, Debby A1 - Woo, Lynn L. A2 - Usatine, Richard P. A2 - Sabella, Camille A2 - Smith, Mindy Ann A2 - Mayeaux, E.J. A2 - Chumley, Heidi S. A2 - Appachi, Elumalai Y1 - 2015 N1 - T2 - The Color Atlas of Pediatrics AB - An otherwise healthy 7-year-old boy presents with a one day history of crampy left-sided abdominal and flank pain associated with nausea and non-bilious vomiting. He is afebrile and denies recent trauma. He is voiding and stooling normally. Exam is unremarkable except for some tenderness to palpation over the left costovertebral angle. Urinalysis is negative for blood or infection. Serum creatinine is within normal limits. Radiographic imaging reveals moderate left-sided hydronephrosis without ureteral dilation and an absence of stones or masses (Figure 65-1). The contralateral kidney and bladder are normal. Renal function testing is consistent with obstruction in the left kidney. The boy undergoes surgical repair for ureteropelvic junction obstruction (UPJO). On follow-up, he has resolution of hydronephrosis and his symptoms. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/19 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1114872734 ER -