title: A Case of Human Leukocyte Antigen (HLA) B27-Positive Intestinal Behçet's Disease with Crohn's Disease-Like Anal Fistulas.
abstract: A 49-year-old male was admitted to our hospital with complaints of perianal pain, bloody stool, and high-grade fever due to perianal abscess. Drainage was carried out; however, the patient's complaints worsened, and biopsy findings of colonoscopy showed ulcerative colitis-like lesions. The patient was diagnosed as having Behçet's disease with intestinal involvement, did not have HLA-B51, but did have HLA-B27. We describe a case of Behcet's disease with colitis, making a differential diagnosis of inflammatory bowel disease difficult.
authors.affiliation: Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan. ; Inflammatory Bowel Disease Center, Department of Internal Medicine, Social Insurance Chuo General Hospital, Tokyo, Japan.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Kobashigawa
authors.affiliation: Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Nanke
authors.affiliation: Inflammatory Bowel Disease Center, Department of Internal Medicine, Social Insurance Chuo General Hospital, Tokyo, Japan.
authors.forename: Masakazu
authors.initials: M
authors.lastname: Takazoe
authors.affiliation: Department of Pathology, Social Insurance Chuo General Hospital, Tokyo, Japan.
authors.forename: Kuniko
authors.initials: K
authors.lastname: Iihara
authors.affiliation: Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Hisashi
authors.initials: H
authors.lastname: Yamanaka
authors.affiliation: Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan.
authors.forename: Shigeru
authors.initials: S
authors.lastname: Kotake
keywords: Behçet’s disease; HLA-B locus; anal fistula; inflammatory bowel diseases; spondyloarthropathy