Since m1 and m2 intramucosal lesions in these patients have no possibility of lymph node involvement, since m3 lesions involve the lymph nodes in only 4% of cases, less invasive endoscopic resection could be a valid alternative for treatment of this condition 19. Focal endoscopic resection of the mucosa has obtained complete remission in 97% to 100% of patients with high grade dysplasia and carcinoma in situ with 5 year survival rates of 84% to 98% 20-22.
La resección endoscópica focal de la mucosa ha mostrado obtener remisión completa en 97-100% de los pacientes con displasia de alto grado y carcinoma in situ, con sobrevida a 5 años de 84-98% 20-22, incluso las recurrencias o lesiones metacrónicas informadas hasta en 21,5% de los pacientes pueden ser manejadas de esta manera 23.