Schwann cell hamartoma associated with hyperplastic colon polyp: An exceptional finding G. Castillo-López; S. González-Vázquez; T. Iscar-Galán; L. Alarcón-García; J.M. Riesco-López;

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;