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Vol. 87. Issue 1.
Pages 33-38 (January 2010)
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Vol. 87. Issue 1.
Pages 33-38 (January 2010)
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The impact of obesity on the histopathological characteristics of colorectal tumours. An observational study
Impacto de la obesidad en las características anatomopatológicas de los tumores colorrectales. Estudio observacional
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Miguel Juan García-Oria Serranoa,
Corresponding author
miguel.garcia.oria@gmail.com

Author for correspondence.
, Manuel Armengol Carrascob, Rosa Ortizc, Antoni Codina Cazadord
a Servicio de Cirugía General y Digestiva, Hospital Sanitas La Moraleja, Madrid, Spain
b Servicio de Cirugía General y Digestiva, Hospital Universitari Vall d’Hebrón de Barcelona, Barcelona, Spain
c Servicio de Anatomía Patológica, Hospital Universitari de Girona Dr. Josep Trueta, Gerona, Spain
d Servicio de Cirugía General y Digestiva, Hospital Universitari de Girona Dr. Josep Trueta, Gerona, Spain
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Abstract
Background

To asses the influence of body mass index on the tumour characteristics of patients subjected to colorectal cancer surgery.

Materials and methods

Retrospective observational study. Patients subjected to curative elective colorectal cancer surgery at Hospital Josep Trueta of Girona (Spain), from 1990 to 2001.

Univariate and bivariate analyses were performed to evaluate differences in tumour characteristics with regard to body mass index.

Results

A total of 369 patients with colorectal cancer were included into the study, 213 (57.7%) with colon cancer, and 156 (42.3%) with rectal cancer. For colon cancer patients, when the BMI was higher than 25 kg/m2, the tumour grade was worst (P=.011), and when BMI was above 30 kg/m2 there were more lymph node metastasis. For rectal tumours, the higher the BMI, the more lymph node metastasis (P=.041), and higher tumour stage (P=.023).

Conclusions

Patients with a higher BMI have more lymph node metastasis when submitted to elective colorectal cancer surgery. In the case of colon cancer they also have worst tumour grades, and in the case of rectal cancer, a more advanced tumour stage.

Keywords:
Body mass index
Obesity
Colorectal neoplasms
Pathology
Neoplasm staging
Resumen
Introducción

La obesidad es uno de los factores implicados en la génesis del cáncer colorrectal (CCR); sin embargo, no está claro cuál es el impacto que puede tener en las características anatomopatológicas de estos tumores una vez que se han desarrollado.

El objetivo de este estudio es determinar en nuestros pacientes cómo influye el índice de masa corporal (IMC) en las características histológicas de estos tumores.

Material y métodos

Estudio retrospectivo observacional. Se incluyó en el estudio a los pacientes intervenidos electivamente por CCR con intención curativa en el Hospital Universitario de Girona, España, durante los años 1990 a 2001. Se ha realizado un análisis descriptivo y bivariable para evaluar posibles diferencias en función del IMC por lo que respecta a los datos tumorales.

Resultados

Se incluyó en el estudio a 369 pacientes con CCR: 213 pacientes (57,7%) con cáncer de colon y 156 pacientes (42,3%) con cáncer de recto. En el caso de los tumores de colon, los pacientes con IMC mayor de 25 kg/m2 tuvieron tumores peor diferenciados (p = 0,011), y los de IMC de más de 30 kg/m2 tuvieron mayor afectación ganglionar que el resto. Para los tumores de recto, cuanto mayor fue el IMC mayor la afectación ganglionar (p = 0,041) y el estadio tumoral TNM (p = 0,023).

Conclusiones

Los pacientes con mayor IMC tienen mayor afectación ganglionar. En el caso del cáncer de colon son, además, tumores más indiferenciados, y en el caso del cáncer de recto son tumores en estadios más avanzados.

Palabras clave:
Índice de masa corporal
Obesidad
Neoplasia colorrectal
Anatomía patológica
Estadio tumoral
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This article was used as an oral presentation at the National Meeting of Coloproctology in Barcelona on May 27-29, 2009.

Copyright © 2010. Asociación Española de Cirujanos
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