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Article Abstract

Background: Mucinous adenocarcinoma is a rare histologic feature of colorectal cancer and is characterized by oncologic features that are different from those of adenocarcinoma. However, there are conflicting views regarding the prognostic impact of mucinous adenocarcinoma on colon cancer.

Objective: This study aimed to evaluate the prognostic impact of mucinous adenocarcinoma in stage II and III colon cancer.

Design: This was a retrospective cohort study.

Settings: This study was conducted between January 2010 and December 2015. Patients were divided into the mucinous adenocarcinoma and nonmucinous adenocarcinoma groups. Disease-free survival and overall survival were assessed using propensity score matching.

Patients: Overall, 2532 patients who underwent radical surgery for stage II and III colon cancer were included in the study.

Main Outcome Measures: The main outcome measures were disease-free survival and overall survival.

Results: The median follow-up duration was 86 months. The disease-free survival and overall survival were significantly lower in the mucinous adenocarcinoma group than in the nonmucinous adenocarcinoma group. In subgroup analysis, there was no significant difference in the disease-free survival and overall survival between patients with and without mucinous adenocarcinoma with stage II colon cancer. In stage III colon cancer, the disease-free survival and overall survival were significantly lower in patients with mucinous adenocarcinoma than in those without mucinous adenocarcinoma. Multivariable analysis showed that mucinous adenocarcinoma was a poor prognostic factor for disease-free survival and overall survival.

Limitation: The study's limitations include those that are inherently associated with retrospective single-center studies.

Conclusions: Mucinous adenocarcinoma is a poor prognostic factor in stage III but not in stage II colon cancer. Therefore, mucinous adenocarcinoma might not be regarded as an independent risk factor requiring chemotherapy for favorable oncologic outcomes. However, for stage III colon cancer, patients with mucinous adenocarcinoma require close observation.

Impacto Pronstico Del Adenocarcinoma Mucinoso En Las Etapas Ii Y Iii De Cncer De Clon: ANTECEDENTES:El adenocarcinoma mucinoso es una característica histológica rara del cáncer colorrectal, se caracteriza por propiedades oncológicas que son diferentes a las del adenocarcinoma. Sin embargo, existen puntos de vista contradictorios con respecto al impacto pronóstico del adenocarcinoma mucinoso en el cáncer de colon.OBJETIVO:Este estudio tuvo como objetivo evaluar el impacto pronóstico del adenocarcinoma mucinoso en las etapas II y III de cáncer de cólon.DISEÑO Y CONFIGURACIONES:Este estudio de cohorte retrospectivo se realizó entre enero de 2010 y diciembre de 2015. Los pacientes se dividieron entre grupos de adenocarcinoma mucinoso y adenocarcinoma no mucinoso. La supervivencia libre de enfermedad y la supervivencia global se evaluaron utilizando emparejamiento por puntuación de propensión.PACIENTES:En general, 2,532 pacientes que se sometieron a cirugía radical para etapa II y III de cáncer de colon se incluyeron en el estudio.PRINCIPALES MEDIDAS DE RESULTADO:Las principales medidas de resultado fueron la supervivencia libre de enfermedad y la supervivencia general.RESULTADOS:La mediana de duración del seguimiento fue de 86 meses. La supervivencia libre de enfermedad y la supervivencia global fueron significativamente menores en el grupo de adenocarcinoma mucinoso que en el grupo de adenocarcinoma no mucinoso. En el análisis de subgrupos, no hubo diferencias significativas en la supervivencia libre de enfermedad y la supervivencia global entre los pacientes con o sin adenocarcinoma mucinoso con cáncer de cólon etapa II. En el cáncer de colon etapa III, la supervivencia libre de enfermedad y la supervivencia global fueron significativamente más bajas en pacientes con adenocarcinoma mucinoso que en aquellos sin adenocarcinoma mucinoso. El análisis multivariable mostró que el adenocarcinoma mucinoso era un factor de mal pronóstico para la supervivencia libre de enfermedad y la supervivencia global.LIMITACIONES:Las limitaciones del estudio incluyen aquellas que están inherentemente asociadas con estudios retrospectivos de un solo centro.CONCLUSIONES:El adenocarcinoma mucinoso es un factor de mal pronóstico en el cáncer de colon etapa III pero no en etapa II. Por lo tanto, el adenocarcinoma mucinoso podría no considerarse un factor de riesgo independiente que requiera quimioterapia para obtener resultados oncológicos favorables. Sin embargo, para el cáncer de colon etapa III, los pacientes con adenocarcinoma mucinoso requieren observación cercana. (Traducción-Dr. Aurian Garcia Gonzalez ).

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http://dx.doi.org/10.1097/DCR.0000000000002733DOI Listing

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