Cholecystocutaneous fistula, an uncommon pathology today E. Ballesteros-Suárez; F. Navarro-Tovar; C.Z. Díaz-Barrientos; E.I. Marín-Pardo; E. Hernández-Pérez;

Surgical approach to anorectal melanoma: A case report M. Philippe-Ponce; M.A. Vela-Ramos; M.A. Jiménez-Durán; C.Z. Díaz-Barrientos; R. Zayas-Borquez;