title: Primary syphilitic chancre in the rectum.
authors.affiliation: Digestive Diseases Department, Hospital de Alta Resolución de Écija, Sevilla, Spain.
authors.forename: Israel
authors.initials: I
authors.lastname: Grilo Bensusan
authors.affiliation: Digestive Diseases Department, Hospital de Alta Resolución de Écija, Sevilla, Spain.
authors.forename: Leonor
authors.initials: L
authors.lastname: Gómez-Regife
mesh_terms: D003113:Colonoscopy; D006471:Gastrointestinal Hemorrhage / Q000382:microbiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012002:Rectal Diseases / Q000382:microbiology*; D013587:Syphilis / Q000150:complications* / Q000175:diagnosis / Q000188:drug therapy; D014456:Ulcer / Q000382:microbiology*