title: Gastrointestinal: Letterer Siwe disease: An uncommon gastrointestinal presentation.
authors.affiliation: Division of Gastroenterolgy and Hepatology, Department of Medicine, Hamad General Hospital, Doha, Qatar.
authors.forename: Muneera
authors.initials: M
authors.lastname: Al-Mohannadi
authors.affiliation: Division of Gastroenterolgy and Hepatology, Department of Medicine, Hamad General Hospital, Doha, Qatar.
authors.forename: Rafie
authors.initials: R
authors.lastname: Yakoub
authors.affiliation: Department of Laboratory Medicine and Pathology, Hamad General Hospital, Doha, Qatar.
authors.forename: Madiha E
authors.initials: ME
authors.lastname: Soofi
authors.affiliation: Medical Oncology, National Center for Cancer Care and Research (NCCCR), Hamad Medical Corporation, Doha, Qatar.
authors.forename: Hesham Mahmoud A
authors.initials: HM
authors.lastname: Elsabah
authors.affiliation: Division of Gastroenterolgy and Hepatology, Department of Medicine, Hamad General Hospital, Doha, Qatar.
authors.forename: Ragesh Babu
authors.initials: RB
authors.lastname: Thandassery
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000032:analysis; D001706:Biopsy; D003106:Colon / Q000737:chemistry / Q000187:drug effects / Q000473:pathology; D003108:Colonic Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000378:metabolism; D003113:Colonoscopy; D004359:Drug Therapy, Combination; D005260:Female; D005765:Gastrointestinal Agents / Q000008:administration & dosage; D006646:Histiocytosis, Langerhans-Cell / Q000175:diagnosis* / Q000188:drug therapy / Q000378:metabolism; D006801:Humans; D007150:Immunohistochemistry; D015122:Mercaptopurine / Q000008:administration & dosage; D011237:Predictive Value of Tests; D011239:Prednisolone / Q000008:administration & dosage; D013997:Time Factors; D016896:Treatment Outcome; D014747:Vinblastine / Q000008:administration & dosage
chemical_list: D015415:Biomarkers; D005765:Gastrointestinal Agents; D014747:Vinblastine; D011239:Prednisolone; D015122:Mercaptopurine