Principle of Pit Pattern Diagnosis and its Correlation with Image-enhanced Endoscopy(IEE) Kyoku Sumimoto 1 , Shinji Tanaka 1 , Katsuaki Inagaki 1 , Yuki Okamoto 1 , Hidenori Tanaka 1 , Kenta Matsumoto 2 , Kazuki Boda 2 , Ken Yamashita 2 , Yuki Ninomiya 1 , Nana Hayashi 1 , Shiro Oka 2 , Kazuaki Chayama 2 , Koji Arihiro 3 , Yasuhiko Kitadai 4 , Fumio Shimamoto 5 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan 3Department of Anatomical Pathology, Hiroshima University Hospital, Hiroshima, Japan 4Department of Health and Science, Prefectural University of Hiroshima, Hiroshima, Japan 5Department of Human Sciences, Faculty of Humanities and Human Sciences, Hiroshima Shudo University, Hiroshima, Japan Keyword: pit pattern , 画像強調観察 , NBI , 拡大観察 , 大腸腫瘍 pp.39-47
Published Date 2019/1/25
DOI https://doi.org/10.11477/mf.1403201559
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 This chapter introduces a history of pit pattern diagnosis and its basic rule. In addition, it describes the correlation between pit pattern diagnosis and magnifying NBI findings with some data of our clinical research. We evaluated the correlation between pit pattern and JNET classification using consecutive colorectal tumors comprising hyperplastic polyp, sessile serrated polyp, adenoma, and early cancer. NBI findings(pit-like pattern)nearly corresponded to pit pattern in lesions with regular surface pattern(JNET Type 1, 2A). Conversely, NBI findings(pit-like pattern)and pit pattern were not always the same in lesions with irregular surface pattern(JNET Type 2B, 3). In such case, NBI appearance tends to be more irregular than pit pattern. A difference certainly exists between surface pattern(pit-like pattern)in NBI and real pit pattern. Hence, it is essential to be familiar with each histopathological characteristic and diagnostic feature to use them most effectively in daily colonoscopy.

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