title: Non-healing perianal ulcer in an immunocompetent patient as the presenting sign of a systemic disease.
authors.affiliation: Gastroenterology Department, Faculty of Medicine, Centro Hospitalar de São João, Alameda Prof. Hernani Monteiro, 4200-319, Porto, Portugal. anapatriciarandrade@gmail.com.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Andrade
authors.affiliation: Gastroenterology Department, Instituto Português de Oncologia, Porto, Portugal.
authors.forename: Jorge
authors.initials: J
authors.lastname: Lage
authors.affiliation: Dermatology Department, Faculty of Medicine, Centro Hospitalar de São João, Porto, Portugal.
authors.forename: Carmen
authors.initials: C
authors.lastname: Lisboa
authors.affiliation: Anatomic Pathology Department, Faculty of Medicine, Centro Hospitalar de São João, Porto, Portugal.
authors.forename: Roberto
authors.initials: R
authors.lastname: Silva
authors.affiliation: Gastroenterology Department, Faculty of Medicine, Centro Hospitalar de São João, Alameda Prof. Hernani Monteiro, 4200-319, Porto, Portugal.
authors.forename: José
authors.initials: J
authors.lastname: Sarmento
authors.affiliation: Gastroenterology Department, Faculty of Medicine, Centro Hospitalar de São João, Alameda Prof. Hernani Monteiro, 4200-319, Porto, Portugal.
authors.forename: Regina
authors.initials: R
authors.lastname: Gonçalves
authors.affiliation: Gastroenterology Department, Faculty of Medicine, Centro Hospitalar de São João, Alameda Prof. Hernani Monteiro, 4200-319, Porto, Portugal.
authors.forename: Susana
authors.initials: S
authors.lastname: Lopes
authors.affiliation: Gastroenterology Department, Faculty of Medicine, Centro Hospitalar de São João, Alameda Prof. Hernani Monteiro, 4200-319, Porto, Portugal.
authors.forename: Guilherme
authors.initials: G
authors.lastname: Macedo
mesh_terms: D000328:Adult; D001003:Anal Canal / Q000473:pathology; D003113:Colonoscopy; D003937:Diagnosis, Differential; D006801:Humans; D007121:Immunocompetence; D008297:Male; D010502:Perineum / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014376:Tuberculosis / Q000150:complications / Q000175:diagnosis* / Q000188:drug therapy; D014456:Ulcer / Q000150:complications / Q000000981:diagnostic imaging / Q000473:pathology*; D014945:Wound Healing