An International Study on the Diagnostic Accuracy of the Japan Narrow-Band Imaging Expert Team Classification for Colorectal Polyps Observed with Blue Laser Imaging
| Autor: | Cheng Tang Chiu, Hidemi Goto, Yoshiki Hirooka, Chen Ming Hsu, Masanao Nakamura, Hiroto Suzuki, Ming Yao Su, Tsung Hsing Chen, Takeshi Yamamura |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male medicine.medical_specialty Colon Taiwan Colonic Polyps Diagnostic accuracy 03 medical and health sciences Narrow Band Imaging Young Adult 0302 clinical medicine Japan Predictive Value of Tests Medicine Humans Intestinal Mucosa Colorectal Tumors Aged Aged 80 and over Narrow-band imaging Invasive carcinoma business.industry Lasers Magnifying endoscopy Gastroenterology Rectum Performed Diagnosis Colonoscopy Middle Aged Predictive value 030220 oncology & carcinogenesis Colorectal Polyp 030211 gastroenterology & hepatology Female Radiology Neoplasm Grading business Colorectal Neoplasms |
| Zdroj: | Digestion. 101(3) |
| ISSN: | 1421-9867 |
| Popis: | Background: The Japan narrow-band imaging Expert Team (JNET) classification of colorectal polyps based on magnifying endoscopy is used in Japan, but not worldwide. The objective of this study was to clarify differences of diagnostic accuracy between JNET users in Japan and non-JNET users in other countries. Methods: A total of 185 colorectal tumors were assessed. Six endoscopists (3 each from Japan and Taiwan) participated in the study. The Japanese endoscopists normally used the JNET classification and the Taiwanese endoscopists normally used the narrow-band imaging International Colorectal Endoscopic classification for diagnosis of colorectal tumors. After receiving a lecture on the JNET classification, they all observed one blue laser imaging magnified image per lesion and performed diagnosis based on the JNET classification. Results: Diagnostic ability was equivalent for Type 1, Type 2A, and Type 2B. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value of Type 3 for deep submucosal invasive carcinoma was, respectively, 44.4, 98.3, 57.1, and 97.2% in Group J and 70.0, 94.7, 40.4, and 98.4% in Group T. The PPV for diagnosis of Type 3 with a high confidence was significantly higher in Group J than in Group T (81.8% [55.4–94.6] vs. 44.4% [33.6–50.9], p < 0.05). Conclusions: The PPV for Type 3 differed between the 2 groups, suggesting the need to become familiar with differentiation between Type 2B and Type 3. |
| Databáze: | OpenAIRE |
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