Retrograde intrarenal surgery as a tool for lithiasis management in renal anomalies. Four cases description.

Abstract:

OBJECTIVE:The management of stone disease in renal abnormalities is a challenge for urologist due to its rarity. The aim of the current manuscript is to report our experience in Retrograde Intrarenal Surgery (RIRS) in 4 complex-abdnormal cases using the flexible videoureterorrenoscopy. MATERIAL AND METHODS:Data was prospectively collected and retrospectively analyzed regarding our first 100 RIRS for stone disease with flexible videoureterorrenoscope (FLEX-X 8.4 Fr- STORZ®) between 2017and 2018. Four patients presented with renal anomalies and stone disease; one horseshoe kidney, polycystickidney, a renal ectopia fused and a caliceal diverticulum. We analyzed demographic variables (age andgender), stone size, previous treatment received, clinical presentation, stone free rate and complication rate using Dindo-Clavien classification. RESULTS:4 (4%) cases of renal stone disease associated to renal anomalies were identified. All procedures were ambulatory. The mean age was 56 years (43 to 65) being 3 male and 1 female. The average stone size was 16.25 mm (6 to 23). All cases represented recurrent stone disease, initially treated with a primary treatment such as extracorporeal shock wave or percutaneous lithotripsy. The mean surgical time was 57 minutes (43 to 79) and the stone free rate 100%. As complications, one patient presented low back pain at 48 hour safter surgery, which did not yield with oral analgesics requiring intravenous treatment, although without admission (Clavien II). CONCLUSION:Retrograde intrarenal surgery for the management of renal stone in kidney anomalies is safe, feasible and effective. However; more cases and comparative studies with percutaneous and extracorporeal lithotripsy are needed to optimize treatment decision making. OBJETIVO:El manejo de la litiasis en anomalías renales es un desafío para el urólogo debido a su infrecuencia; motivo por el cual, el objetivo es presentar nuestra experiencia en Cirugía Retrógrada Intrarrenal (RIRS) en 4 casos con el uso del videoureterorrenoscopio flexible.MATERIAL Y MÉTODOS: Analizamos retrospectivamente la base de datos de las primeras 100 RIRS por litiasis desde la incorporación del videoureterorrenoscopio flexible (FLEX-X 8.4 Fr-STORZ®). Un total de 4 (4%) pacientes presentaban una anomalía renal asociada;un riñón en herradura, un riñón poliquístico, una ectopía renal cruzada fusionada y un divertículo calicial. Las variables analizadas fueron; demográficas (edad y género); tamaño de la litiasis, tratamientos previos, presentación clínica, tasa libre de litiasis y tasa de complicaciones perioperatorias según la clasificación Dindo-Clavien. RESULTADOS:Entre febrero 2017- marzo del 2018, 4 (4%) pacientes presentaban litiasis asociada a alguna malformación renal. Todos los procedimientos fueron ambulatorios y las litiasis accesibles a la deflexión del endoscopio a pesar de la malformación. La edad promedio fue de 56 años (43 a 65 años) siendo 3 hombres y 1 mujeres. El tamaño medio de la litiasis fue de 16,25 milímetros (6 a 23 mm). Todos los pacientes habían sido tratados previamente con Litotricia Extracopórea por Ondas de Choque (LEOC) y, el paciente con ectopía renal cruzada, mediante un abordaje percutáneo sin éxito. El tiempo promedio de cirugía fue de 57 minutos (43 a 79 minutos) siendo la tasa libre de litiasis del 100%. Como complicaciones, un paciente presentó dolor lumbar a las 48 horas de la cirugía que no cedió con analgésicos vía oral requiriendo tratamiento endovenoso aunque sin hospitalización (Clavien II).CONCLUSIÓN: La cirugía retrógrada intrarrenal es factible, segura y efectiva para el manejo de la litiasis en anomalías renales. No obstante, se necesitan mayor número de casos y estudios comparativos con la litotricia percutánea y extracorpórea como para optarlo como tratamiento de primera línea y no como alternativa a los anteriores.

journal_name

Arch Esp Urol

authors

López-Fontana G,Guglielmi JM,López-Laur JD,López-Fontana R

subject

Has Abstract

pub_date

2020-04-01 00:00:00

pages

202-208

issue

3

eissn

0004-0614

issn

1576-8260

pii

2020-73-3-b1fb2c93597b023731b44807d130917be50bf962

journal_volume

73

pub_type

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