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Magnifying Endoscopic Diagnosis with Image-enhanced Endoscopy(JNET Classification) Takashi Hisabe 1,2,3 , Tatsuhisa Yasaka 3 , Yuya Hiratsuka 2 , Kenjiro Matsumoto 1 , Kumi Kaji 1 , Takao Kanemitsu 1 , Noritaka Takatsu 3 , Masaki Miyaoka 2 , Satoshi Nimura 4 1Department of Gastroenterology, Fukuoka University Chikushi Hospital 2Department of Endoscopy, Fukuoka University Chikushi Hospital 3Center of Inflammatory Bowel Disease, Fukuoka University Chikushi Hospital 4Department of Pathology, Fukuoka University Chikushi Hospital Keyword: 早期大腸癌 , NBI , BLI , JNET分類 , WOS pp.429-436
Published Date 2026/4/25
DOI https://doi.org/10.11477/mf.053621800610040429

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  • Abstract
  • Look Inside
  • Reference

 In the endoscopic diagnosis of colorectal tumors, image-enhanced endoscopy(IEE), such as narrow band imaging(NBI)and blue laser/light imaging, enables detailed observation of the microvascular architecture and surface microstructure of the mucosal surface. This allows high-precision examinations and comprehensive qualitative diagnosis.

 As the degree of histological atypia increases and angiogenesis progresses in colorectal tumors, lesion contrast becomes more pronounced relative to the surrounding mucosa. Moreover, due to cancer cell invasion and proliferation, inflammatory cell infiltration, and stromal reactions, the surface microstructure becomes heterogeneous and exhibits various morphological patterns.

 For qualitative and in-depth diagnosis, the Japan NBI Expert Team classification has been proposed and is now widely used, with well-documented utility. However, type 2B lesions encompass a wide pathological spectrum that ranges from adenoma to T1b carcinoma. Furthermore, in depressed-type lesions, vessel pattern and surface pattern recognition can be challenging, making pit pattern analysis necessary for certain lesions.

 Furthermore, when vessel pattern visualization is hindered by the presence of a white opaque substance, its morphological features may serve as an alternative indicator for surface pattern evaluation.


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

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