title: Graft-Versus-Host Disease Presenting as Anorectal Ulcer.
authors.affiliation: Gastroenterology Department, Portuguese Oncology Institute, Porto, Portugal; Gastroenterology Department, Hospital do Espírito Santo, Évora, Portugal.
authors.forename: Sara
authors.initials: S
authors.lastname: Pires
authors.affiliation: Gastroenterology Department, Portuguese Oncology Institute, Porto, Portugal.
authors.forename: Jorge
authors.initials: J
authors.lastname: Lage
authors.affiliation: Gastroenterology Department, Portuguese Oncology Institute, Porto, Portugal; Department of Physiology, Porto Faculty of Medicine, Porto, Portugal; CINTESIS/Biostatistics and Medical Informatics, Porto Faculty of Medicine, Porto, Portugal.
authors.forename: Pedro
authors.initials: P
authors.lastname: Pimentel-Nunes
mesh_terms: D005401:Fissure in Ano / Q000209:etiology* / Q000473:pathology; D006086:Graft vs Host Disease / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D008297:Male; D008875:Middle Aged; D009190:Myelodysplastic Syndromes / Q000628:therapy*; D011351:Proctoscopy; D012002:Rectal Diseases / Q000209:etiology* / Q000473:pathology; D012812:Sigmoidoscopy; D014456:Ulcer / Q000209:etiology* / Q000473:pathology