An unusual type of early gastric cancer with aggressive behavior: It is not always adenocarcinoma! R. Ruiz; L. Marín-Calderón; H. Benites-Goñi; N. Fernández; M. Kapsoli;

Neuroendocrine tumor of the ileocecal valve: A case report and review of the literature E.L. Maldonado-García; A.F. Álvarez-Barragán; C.E. Acevedo-Aguirre; B. Galicia-Alemán; G. Arellano-Gutiérrez;

Pharmacologic management of patients with hepatic and pancreatic diseases that involve immunosuppressive therapies. Positioning within the framework of the SARS-CoV-2 (COVID-19) pandemic G. Miranda-Zazueta; J.A. González-Regueiro; I. García-Juárez; C. Moctezuma-Velázquez; F.J. López-Díaz; B. Pérez-González; L.F. Uscanga-Domínguez; M. Peláez-Luna;