More than 90% of the EGCs are adenocarcinomas 6 and the rest are less frequent tumors such as lymphomas, gastrointestinal stromal tumors GIST and carcinoid tumors 7.
Más del 90% de los CGs son adenocarcinomas 6 y el resto tumores menos frecuentes como linfomas, tumores estromales gastrointestinales GIST y tumores carcinoides 7.