Learning Effect of Diagnosing Depth of Invasion Using Non-Extension Sign in Early Gastric Cancer
| Autor: | Soichi Itaba, Kensei Ohtsu, Yoko Wada, Suketo So, Takashi Nagahama, Toshihiro Sakurai, Noritaka Takatsu, Shigeo Nakamura, Hajime Yamagata, Teruyuki Takeda, Hirotada Akiho, Kenshi Yao, Shinichiro Yada, Ichiro Yoshikawa |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Learning effect 03 medical and health sciences 0302 clinical medicine Stomach Neoplasms Gastroscopy Clinical endpoint Humans Medicine Neoplasm Invasiveness Prospective Studies Diagnostic Errors Early Detection of Cancer Neoplasm Staging medicine.diagnostic_test business.industry Gastroenterologists Gastroenterology Diagnostic marker Middle Aged Early Gastric Cancer Endoscopy Gastric Mucosa Depth of invasion 030220 oncology & carcinogenesis Female 030211 gastroenterology & hepatology Clinical Competence Radiology business Sign (mathematics) |
| Zdroj: | Digestion. 101:191-197 |
| ISSN: | 1421-9867 0012-2823 |
| DOI: | 10.1159/000498845 |
| Popis: | Background: Determining the depth of invasion is important when considering therapeutic strategies for early gastric cancer (EGC). We determined the effects of learning the non-extension sign, that is, an index of T1b2 in EGC, on identifying its depth of invasion. Methods: Endoscopic images of 40 EGC cases (20 showing positive non-extension sign on endoscopy as T1b2 and 20 showing negative non-extension sign on endoscopy as T1a-T1b1) were randomly displayed on PowerPoint. Participants read endoscopy findings (pretest) and attended a 60-min lecture on how to read the non-extension sign. Then, they read the same images using the non-extension sign as the marker (posttest). The primary endpoint was a change in accuracy rate for determining the depth of invasion before and after attending the lecture, for nonexperts (< 80%). Results: Among 35 endoscopists, 12 were nonexperts; their test results were used for analyses. Accuracy rates for pretest and posttest among nonexperts were 75.2 and 82.5%, respectively, showing a significant increase in the accuracy rate after learning to read the non-extension sign (p = 0.003). Conclusion: Nonexperts’ diagnostic ability to determine the depth of invasion of EGC improved by learning to read the non-extension sign. Thus, the non-extension sign is considered a simple and useful diagnostic marker. |
| Databáze: | OpenAIRE |
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