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Vol. 86. Issue 2.
Pages 94-100 (August 2009)
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Vol. 86. Issue 2.
Pages 94-100 (August 2009)
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Influence of bariatric surgery on the non-alcoholic liver steatosis. A histological evaluation
Influencia de la cirugía bariátrica en esteatosis hepática no alcohólica. Evaluación histológica
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Manuel Ferrer Márqueza,
Corresponding author
manuferrer78@hotmail.com

Corresponding author.
, Carolina Carvia Pousaillèb, Javier Velasco Albendeac, María del Mar Rico Moralesa, Marta Casado Martínd, Ricardo Belda Lozanoa, Manuel Ferrer Ayzaa
a Servicio de Cirugía General y del Aparato Digestivo, Hospital Torrecárdenas, Almería, Spain
b Servicio de Radiología, Hospital Torrecárdenas, Almería, Spain
c Servicio de Anatomía Patológica, Hospital Torrecárdenas, Almería, Spain
d Servicio de Digestivo, Hospital Torrecárdenas, Almería, Spain
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Abstract
Introduction

Non-alcoholic fatty liver (NAFL) is highly prevalent in obese patients. The aim of this study is to look at the development of the histological lesions in these patients that we treated using biliopancreatic diversion.

Material and methods

A liver biopsy was performed on 76 obese patients who were operated on using bariatric surgery. Another liver biopsy was performed on 39 of them between 12 and 24 months after the surgery. The clinical and analytical variables at the time of the surgery, and at 18 months were analysed.

Results

A total of 67 patients (88.1%) had NAFL at the time of the operation. Simple steatosis was seen in 41 (61.2%) patients and 26 (38.8%) had non-alcoholic steatohepatitis (NASH). An improvement was seen in both the associated pathology and the analytical evaluations. A significant improvement was observed in the degree of steatosis as well as the NASH in the second biopsy performed on 39 patients. There were no deteriorations in the lesions in any of the patients.

Conclusions

There is a high prevalence of NAFL among obese patients. Bariatric surgery (Scopinaro) leads to weight loss which is associated to an improvement in the pathology associated with obesity, as well as a significant decrease in the liver function values. After weight loss, almost all our patients showed an improvement in the histological hepatic lesions, and in particular, that NASH disappeared in 85% of them.

Keywords:
Obesity
Surgery
Non-alcoholic fatty liver
Resumen
Introducción

El hígado graso no alcohólico (HGNA) presenta una alta prevalencia entre los pacientes obesos. Él objetivo de este estudio es conocer la evolución de las lesiones histológicas de estos pacientes a los que se trata mediante derivación biliopancreática.

Material y métodos

Se intervino de cirugía bariátrica a 76 pacientes obesos en los que se realizó una biopsia hepática. Entre los 12 y 24 meses tras la cirugía se volvió a obtener una nueva biopsia hepática en 39 de ellos. Se analizaron variables clínicas y analíticas en el momento de la intervención y a los 18 meses.

Resultados

Sesenta y siete pacientes (88,1%) presentaban HGNA en el momento de la intervención. Cuarenta y un pacientes (61,2%) tenían esteatosis simple y 26 pacientes (38,8%) tenían esteatohepatitis no alcohólica (EHNA). Durante el seguimiento se observó una mejoría tanto de la enfermedad asociada como de las evaluaciones analíticas. En la segunda biopsia realizada en 39 pacientes se observó una mejoría importante tanto en el grado de esteatosis como en la EHNA. Ningún paciente mostró empeoramiento de las lesiones.

Conclusiones

El HGNA presenta una alta prevalencia entre los pacientes obesos. La cirugía bariátrica (Scopinaro) induce una pérdida de peso que se asocia a una mejoría de la enfermedad asociada a la obesidad, así como un descenso significativo de los valores de los parámetros de función hepática. Tras la pérdida de peso, casi la totalidad de estos pacientes presentaron mejoría de las lesiones histológicas hepáticas, y destacó que la EHNA desapareció en el 85% de ellos.

Palabras clave:
Obesidad
Cirugía
Hígado graso no alcohólico
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Copyright © 2009. Asociación Española de Cirujanos
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