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Vol. 25. Issue 9.
Pages 534-540 (January 2002)
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Vol. 25. Issue 9.
Pages 534-540 (January 2002)
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¿Es el adenocarcinoma colorrectal mucinoso una entidad diferente?
Is mucinous colorectal adenocarcinoma a distinct entity?
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M.A. Segarrab, V. Pellicerb, R. Gamónb, A.M. Bayónb, M. Canalesb, A. Tornerb, R. Adellb,*, E. Marcotea
a Jefe de Servicio. Hospital de Vinarós. Castelló. España
b Servicio de Cirugía. Hospital de Vinarós. Castelló. España
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Introducción

Algunas publicaciones han puesto de manifiesto que los carcinomas colorrectales mucinosos (CM) se asocian a unas peculiaridades clinicopatológicas y genéticas que los hacen diferentes de los no mucinosos. El objetivo principal del presente trabajo fue valorar en los pacientes operados por cáncer colorrectal (CCR) si el tipo histológico mucinoso se comporta biológicamente de forma diferente del intestinal.

Pacientes

Entre enero de 1993 y diciembre del año 2000 fueron intervenidos en nuestro hospital un total de 215 pacientes por CCR. Fueron agrupados según el tipo histológico de los tumores en dos grupos: intestinal con 169 casos (82%) y mucinoso con 36 (17,6%), y excluidos aquellos casos en los que la cirugía no fue resectiva y los otros tipos histológicos (n = 10).

Resultados

El porcentaje de pacientes menores de 50 años en el grupo de los CM fue del 19% (7/36) frente al 4% (7/169) en los no mucinosos (p = 0,001). En cuanto a la clínica de presentación, los pacientes con CM presentaron una mayor frecuencia de anemia (18,2% [n = 6] frente al 5,7% [n = 8]) y una menor frecuencia de cambio del ritmo deposicional (15% [n = 5] frente al 34,3% [n = 48]; p < 0,05). El 63,9% de los CM (n = 23) se localizazó en el colon proximal (ciego, colon ascendente y transverso) frente al 21,3% (n = 36) de los no mucinosos (p < 0,001). La intención de la intervención fue paliativa en el 41,7% (n = 23,7) de los CM y en el 23,7% (n = 40) de los no mucinosos (p < 0,05). El tamaño medio de los tumores fue de 6,2 ± 2,5 cm en los CM y de 4,7 ± 2 en los no mucinosos (p = 0,001). Se apreció un mayor porcentaje de tumores con metástasis ganglionares y a distancia en los CM y un menor porcentaje de tumores en estadios tempranos en este grupo (p < 0,05). Sin embargo, no hubo diferencias en cuanto a supervivencia entre los dos tipos histológicos.

Conclusión

Los tumores mucinosos se localizan con mayor frecuencia en el colon derecho, se presentan con mayor frecuencia en pacientes menores de 50 años y en estadios más avanzados que los no mucinosos, pero no tienen diferente supervivencia.

Introduction

Several publications have demonstrated that mucinous carcinomas of the colon and rectum are associated with certain clinicopathological and genetic peculiarities that distinguish them from non-mucinous carcinomas. The principal aim of this study was to evaluate whether the biological behavior of mucinous carcinomas differs from that of intestinal carcinomas in patients undergoing surgery for colorectal cancer

Patients

Between January 1993 and December 2000, 215 patients. underwent surgery in our hospital for colorectal cancer. The patients were divided into two groups according to histological type: tumors were intestinal in 169 patients (82%) and mucinous in 36 (17.6%). Patients undergoing non-resective surgery and those with tumors of other histological types (n = 10) were excluded.

Results

The percentage of patients aged less than 50 years in the group with mucinous carcinoma was 19% (7/36) compared with 4% (7/169) in the non-mucinous group (p = 0.001). Regarding presenting symptoms, anemia was more frequent in patients with mucinous carcinoma (18.2% [n = 6] vs 5.7% [n = 8]) and a change in bowel habits was less frequent (15% [n = 5] vs 34.3% [n = 48]; p < 0.05). A total of 63.9% of mucinous carcinomas (n = 23) were located in the proximal colon (cecum, ascending and transverse colon) compared with 21.3% (n = 36) of non-mucinous carcinomas (p < 0.001). Surgical intention was palliative in 41.7% (n = 23.7) of mucinous carcinomas and in 23.7% (n = 40) of non-mucinous carcinomas (p < 0.05). The mean tumoral size was 6.2 ± 2.5 cm in mucinous carcinomas and 4.7 ± 2 in non-mucinous carcinomas (p = 0.001). Patients with mucinous carcinoma presented a higher percentage of nodal and distant metastases and a lower percentage of early stage tumors (p < 0.05). However, no differences were found in survival between the two histological types.

Conclusion

Mucinous tumors were more frequently located in the right colon and in patients less than 50 years old and were more likely to be in more advanced stages than non-mucinous tumors but no differences were found in survival according to tumor type.

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Copyright © 2002. Elsevier España, S.L.. Todos los derechos reservados
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