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Vol. 39. Issue 9.
Pages 582-587 (November 2015)
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Vol. 39. Issue 9.
Pages 582-587 (November 2015)
Surgical Technique
Retroperitoneal and transperitoneal laparoscopic cryotherapy for small renal masses
Crioterapia renal laparoscópica por vía retroperitoneal y transperitoneal en masas renales de pequeño tamaño
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36
A. Domínguez
Corresponding author
arturodom1980@hotmail.com

Corresponding author.
, J.A. Bellido, J. Muñoz-Rodríguez, J.M. Abascal-Junquera, N. Hannaoui, J.M. Banús
Departamento de Urología, Institut Català d’Urologia i Nefrologia, Barcelona, Spain
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Table 1. Patient characteristics.
Table 2. Tumor characteristics.
Table 3. Surgical and follow-up data.
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Abstract
Objective

Cryotherapy is a minimally invasive ablative technique that is considered an alternative to conventional surgery for preserving renal function in small renal tumors and in selected cases. We present our results from laparoscopic renal cryotherapy.

Material and method

We retrospectively analyzed 17 renal tumors diagnosed in 16 patients treated with cryotherapy. The patients’ mean age was 66 years (43–80). The mean tumor size was 1.8cm (0.7–3.7cm). Cryotherapy with double-freeze cycle was performed laparoscopically in all cases (10 by transperitoneal approach and 7 by retroperitoneal approach).

Results

Perioperative biopsies were performed on all patients and were positive for malignancy in 10 cases (59%). The mean stay was 2.8 days. The mean operative time was 162min. Only 1 case reverted to open surgery due to bleeding. One patient required a blood transfusion in the immediate postoperative period. The majority of complications were Clavien-Dindo grades I and II. Some 76.5% of the patients had no complications. After a mean follow-up of 31 months (6–102), 1 patient died from nontumor-related causes, and 12 patients (75%) still show no evidence of local recurrence or progression. One patient had tumor persistence and therefore underwent partial nephrectomy at 6 months. One patient had a metachronous recurrence in the same kidney at 36 months, and another patient had a recurrence at 23 months.

Conclusions

Laparoscopic renal cryotherapy is a safe and feasible technique and is a good alternative to surgery for selected renal tumors.

Keywords:
Renal tumor
Cryotherapy
Laparoscopy
Treatment
Resumen
Objetivo

La crioterapia es una técnica ablativa, mínimamente invasiva, que se plantea como una alternativa a la cirugía convencional para preservar la función renal en tumores renales pequeños y en casos seleccionados. Evaluamos nuestros resultados de crioterapia renal laparoscópica.

Material y método

Se analizan de forma retrospectiva 17 tumores renales tratados con crioterapia diagnosticados en 16 pacientes, con una media de edad de 66 años (43-80). El tamaño medio tumoral fue de 1,8cm (0,7-3,7cm). La crioterapia con doble ciclo de congelación se realizó por vía laparoscópica en todos los casos (10 por abordaje transperitoneal y 7 retroperitoneal).

Resultados

Se realizaron biopsias perioperatorias en todos los pacientes, siendo positiva para malignidad en 10 casos (59%). La estancia media fue de 2,8 días. La media de tiempo operatorio fue de 162min. Solo un caso se reconvertió a cirugía abierta por sangrado. Un paciente requirió transfusión sanguínea en el postoperatorio inmediato. La mayoría de complicaciones fueron Clavien-Dindo I-II. El 76,5% no presentó complicaciones. Tras un seguimiento medio de 31 meses (6-102), un paciente falleció por causa no tumoral y 12 casos (75%) siguen sin evidencia de recidiva local o progresión. Un caso presentó persistencia tumoral, por lo que fue sometido a nefrectomía parcial a los 6 meses. Un paciente presentó recidiva metacrónica en el mismo riñón a los 36 meses y otro recidivó a los 23 meses.

Conclusiones

La crioterapia renal laparoscópica es una técnica segura y factible, siendo una buena alternativa a la cirugía en tumores renales seleccionados.

Palabras clave:
Tumor renal
Crioterapia
Laparoscopia
Tratamiento

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