Upper gastrointestinal involvement secondary to extramedullary plasmacytoma: An unusual presentation in an immunosuppressed patient S.A. Hernández; A. Chaar; F. Ávila; S. Sambracos;

Gastrointestinal bleeding as the first manifestation of gastric amyloidoma: A case report A.C. Hani; A. Tobón; M.J. Vargas; O.M. Muñoz;

Pancreatic ductal adenocarcinoma: Eleven years of experience at a tertiary care hospital center G.E. Sánchez Morales; R.A. Moguel Valladares; J. Flores Maza; U. Clemente Gutiérrez; E. Sánchez-García Ramos; I. Domínguez Rosado; L.C. Chan Núñez;