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Clinical Course of Indeterminate Colitis Fumihito Hirai 1 , Yutaka Yano 1 , Noritaka Takatsu 1 , Takahiro Beppu 1 , Hiroshi Ishihara 1 , Kazeo Ninomiya 1 , Yoichiro Ono 1 , Akihiro Koga 1 , Ken Kinjo 1 , Yuho Sato 1 , Yuki Okado 1 , Takashi Hisabe 1 , Toshiyuki Matsui 1 , Daijiro Higashi 2 , Kitaro Futami 2 , Kentaro Imamura 3 , Hiroshi Tanabe 3 , Keisuke Ikeda 3 , Akinori Iwashita 3 1Department of Gastroenterology, Fukuoka University Chikushi Hospital, Chikushino, Japan 2Department of Surgery, Fukuoka University Chikushi Hospital, Chikushino, Japan 3Department of Pathology, Fukuoka University Chikushi Hospital, Chikushino, Japan Keyword: indeterminate colitis , inflammatory bowel disease unclassified , Crohn病 , 潰瘍性大腸炎 , 鑑別困難例 pp.885-895
Published Date 2015/6/25
DOI https://doi.org/10.11477/mf.1403200344
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 The concept of IC(indeterminate colitis)has changed over the years. Originally, pathologists proposed IC as a diagnosis for colectomy specimens. As per this convention, patients with uncertain diagnosis of CD(Crohn's disease)or UC(ulcerative colitis)but having severe colitis were diagnosed with IC. However, the same terminology was adopted for patients who could not be diagnosed with CD or UC accurately when various factors including clinical, endoscopic, radiographic, and histologic features were considered. In Western countries, the new term“IBDU(inflammatory bowel disease unclassified)”is now used for patients with clinically chronic colitis who clearly have IBD but lack the definitive features of CD or UC. The term“indeterminate colitis”tends to be used for the same condition in Japan, and the definition of IC remains controversial. In this manuscript, we reviewed the literatures regarding IC and IBDU and described the frequency, rates of definite diagnosis, and clinical pattern of IC. The cases with IC that we recently experienced were diagnosed with definite CD in their clinical course. IC is not a definitive entity but a temporary diagnosis, and patients with IC as the first diagnosis need to be carefully followed-up for making the final diagnosis.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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