Abstract
Introduction: Extracorporeal shock wave lithotripsy (ESWL) is an option for the treatment of urinary lithiasis.
 Objective: To describe the outcomes of ESWL for the treatment of urinary lithiasis in children.
 Methods: A descriptive and retrospective study of 51 patients with urinary lithiasis that underwent ESWL from 2014 to 2019.
 Results: Males and 15–18-year-old patients prevailed; 27.4% had prior surgery; 10-20 mm lithiasis of renal location and density between 400-799 HU were the most common; a double J stent was the most utilized urinary derivation prior to lithotripsy treatment; 7.8% required retreatment; 13.7% additional interventions; the stone-free rate was 74.5% at one month and 92.2% at three months. The size of the lithiasis was associated with the success of the treatment (p<0.023). The most frequent complication was steinstrasse; endourologic procedures were the most utilized, grade III b (Clavien-Dindo) prevailed and were associated to older patients (p=0.04), renal lithiasis localization (p=0.017), larger size (p=0.08), and density(p=0.036).
 Conclusions: ESWL is effective and safe for treating urinary lithiasis in children. Its success was significantly associated to smaller stone size and its complications to patients of older age, larger stone size, density and renal localization of the lithiasis.
Highlights
Extracorporeal shock wave lithotripsy (ESWL) is an option for the treatment of urinary lithiasis
Its success was significantly associated to smaller stone size and its complications to patients of older age, larger stone size, density and renal localization of the lithiasis
The patients were diagnosed with urinary lithiasis and treated with ESWL in the Department of Urology at the Centro Havana Pediatric Hospital (CHPH), between January 2014 and December 2019
Summary
Extracorporeal shock wave lithotripsy (ESWL) is an option for the treatment of urinary lithiasis. Objective: To describe the outcomes of ESWL for the treatment of urinary lithiasis in children. Results: Males and 15–18-year-old patients prevailed; 27.4% had prior surgery; 10-20 mm lithiasis of renal location and density between 400799 HU were the most common; a double J stent was the most utilized urinary derivation prior to lithotripsy treatment; 7.8% required retreatment; 13.7% additional interventions; the stone-free rate was 74.5% at one month and 92.2% at three months. The most frequent complication was steinstrasse; endourologic procedures were the most utilized, grade III b (Clavien-Dindo) prevailed and were associated to older patients (p=0.04), renal lithiasis localization (p=0.017), larger size (p=0.08), and density (p=0.036). Its success was significantly associated to smaller stone size and its complications to patients of older age, larger stone size, density and renal localization of the lithiasis. Eighty percent of urinary lithiasis in a child is passed spontaneously or with medical treatment, the rest of the patients require some type of intervention.[3]
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