Literature DB >> 31490830

Perineural Invasion Is a Prognostic but not a Predictive Factor in Nonmetastatic Colon Cancer.

Lieve G J Leijssen1, Anne M Dinaux1, Martin S Taylor2, Vikram Deshpande2, Hiroko Kunitake1, Liliana G Bordeianou1, David L Berger1.   

Abstract

BACKGROUND: Perineural invasion is associated with adverse oncological outcomes in colorectal cancer. However, data regarding the prognostic and predictive impact in colon cancer are scarce.
OBJECTIVE: This study aims to clarify the role of perineural invasion in patients with nonmetastatic colon cancer.
DESIGN: This study is a retrospective review of a prospectively maintained database. SETTINGS: This study took place at a tertiary medical center. PATIENTS: Patients with stage I to III colon cancer who underwent elective surgery at our tertiary center between 2004 and 2015 (n = 1145) were included. MEAN OUTCOME MEASURES: The primary long-term outcomes include disease-free survival, disease-specific survival, and overall survival. Differences were determined by multivariate Cox regression models adjusted for stage and potential confounders.
RESULTS: Perineural invasion was identified in 215 patients (18.8%) and associated with emergency procedures, male sex, and advanced disease. Histopathological features including lymphatic and extramural vascular invasion, poor differentiation, and infiltrating tumor borders were correlated with perineural invasion. Compared with patients with perineural invasion-negative tumors, patients who had perineural invasion-positive tumors had worse disease-free, overall, and disease-specific survival (all p < 0.001). Moreover, patients with perineural invasion-positive node-negative disease had worse overall survival than patients with perineural invasion-negative node-positive disease (p < 0.001). After adjustment, perineural invasion remained significantly associated with worse disease-free survival (HR, 1.45; 95% CI, 1.03-2.03; p = 0.033), worse overall survival (HR, 1.75; 95% CI, 1.33-2.31; p < 0.001), and worse disease-specific survival (HR, 1.52; 95% CI, 1.00-2.30; p = 0.048). However, we did not find a significant predictive response with adjuvant chemotherapy in perineural invasion-positive node-negative tumors (HR, 2.10; 95% CI, 0.80-5.51; p = 0.122). The predictive value was only demonstrated in stage III disease with a significant impaired overall survival in patients with perineural invasion-positive tumors who did not receive adjuvant therapy (HR, 0.23; 95% CI, 0.13-0.40; p < 0.001). LIMITATIONS: This study was limited by its retrospective design.
CONCLUSION: Our study confirms the prognostic value of perineural invasion in stage I to II and III colon cancer. However, patients with node-negative disease and perineural invasion did not significantly benefit from adjuvant therapy. More information regarding postoperative treatment in node-negative perineural invasion-positive colon cancer is required. See Video Abstract at http://links.lww.com/DCR/A988. LA INVASIÓN PERINEURAL COMO FACTOR PRONÓSTICO NO PREDICTIVO EN EL CÁNCER DE COLON NO METASTÁSICO: La invasión perineural se encuentra asociada a resultados oncológicos adversos en casos de cáncer colorrectal. Sin embargo, los datos sobre el impacto pronóstico y predictivo en caso de cáncer de colon son pocos. OBJETIVO: Definir el papel de la invasión perineural en pacientes con cáncer de colon no metastásico. DISEÑO:: Revisión retrospectiva de una base de datos alimentada prospectivamente. AJUSTES: Centro hospitalario de atención terciaria. PACIENTES: Todos aquellos portadores de un cáncer de colon estadío I-III que se sometieron a cirugía electiva en nuestro centro entre 2004-2015 (n = 1145). PRINCIPALES RESULTADOS: Los resultados a largo plazo incluyeron la supervivencia sin enfermedad, la supervivencia específica de la enfermedad y la supervivencia general. Las diferencias se determinaron mediante modelos de regresión multivariantes de Cox, ajustados para el control de factores de confusión durante el análisis por estratificación. RESULTADOS: La invasión perineural fué identificada en 215 pacientes (18.8%) y se la asoció con procedimientos de emergencia, al género masculino y a la enfermedad avanzada. Las características histopatológicas que incluyeron la invasión vascular linfática y extramural, la diferenciación deficiente y los bordes tumorales infiltrantes se correlacionaron con la invasión perineural. Comparativamente con los tumores sin invasión perineural, los pacientes positivos a la invasión perineural tuvieron una peor supervivencia general, libre y específica de la enfermedad (todos p < 0.001). Asimismo, aquellos pacientes con invasion-perineural con ganglios negativos tuvieron una supervivencia global mucho peor que aquellos pacientes con ganglios positivos e invasión perineural negativa (p < 0.001). Después del ajuste, la invasión perineural se asoció significativamente con una peor supervivencia sin la enfermedad (HR, 1.45; IC 95%, 1.03-2.03; p = 0.033), supervivencia general (HR, 1.75; IC 95%, 1.33-2.31; p <0.001), así como con una peor supervivencia específica de la enfermedad (HR, 1.52; IC 95%, 1.00-2.30; p = 0.048). Sin embargo, no encontramos una respuesta predictiva significativa con quimioterapia adyuvante en los tumores acompañados de invasion-perineural con ganglios negativos (HR, 2.10; IC del 95%, 0.80-5.51; p = 0.122). El valor predictivo solo fué demostrado en aquellos casos de estadio III con un deterioro significativo de la supervivencia global en pacientes con tumores perineurales positivos a la invasión y que no recibieron tratamiento adyuvante (HR, 0.23; IC 95%, 0.13-0.40; p < 0.001). LIMITACIONES: Diseño retrospectivo. CONCLUSIÓN:: Nuestros resultados confirman el valor pronóstico de la invasión perineural en el cáncer de colon estadios I-II y III. Sin embargo, los pacientes con enfermedad ganglionar negativa e invasión perineural no se beneficiaron significativamente de la terapia adyuvante. Se requiere más información sobre el tratamiento postoperatorio en el cáncer de colon positivo para la invasión perineural con ganglios negativos. Vea el Resumen del video en http://links.lww.com/DCR/A988.

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Mesh:

Year:  2019        PMID: 31490830     DOI: 10.1097/DCR.0000000000001450

Source DB:  PubMed          Journal:  Dis Colon Rectum        ISSN: 0012-3706            Impact factor:   4.585


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