| Theme | Modality and new development in diagnosis for colorectal tumor -- with the aim of the improvement of a presence and qualitative diagnosis | |
|---|---|---|
| Title | Extra-wide-angle colonoscope (Olympus) | |
| Publish Date | 2017/09 | |
| Author | Toshio Uraoka | Department of Gastroenterology, National Hospital Organization Tokyo Medical Center / Division of Research and Development for Minimally Invasive Treatment, Cancer Center, School of Medicine, Keio University |
| Author | Shinji Tanaka | Department of Endoscopy, Hiroshima University Hospital |
| Author | Takayuki Matsumoto | Division of Gastroenterology, Department of Medicine, Iwate Medical University |
| Author | Yutaka Saito | Endoscopy Division, National Cancer Center Hospital |
| Author | Shoichi Saito | Department of Gastroenterology, The Cancer Institute Hospital |
| Author | Takahisa Matsuda | Endoscopy Division, National Cancer Center Hospital / Cancer Screening Center, National Cancer Center Hospital |
| Author | Shiro Oka | Department of Endoscopy, Hiroshima University Hospital |
| Author | Tomohiko Moriyama | Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University |
| Author | Haruhiko Ogata | Center for Diagnostic and Therapeutic Endoscopy, Keio University School of Medicine |
| Author | Naohisa Yahagi | Division of Research and Development for Minimally Invasive Treatment, Cancer Center, School of Medicine, Keio University |
| Author | Hideki Ishikawa | Department of Molecular-Targeting Cancer Prevention, Kyoto Prefectural University of Medicine |
| Author | Hisao Tajiri | Department of Innovative Interventional Endoscopy Research, The Jikei University School of Medicine |
| [ Summary ] | Endoscopic removal of adenomas can decrease the incidence of and mortality associated with colorectal cancer. However, the adenoma detection rate (ADR) of a colonoscopy cannot be 100 %. Novel colonoscopes have been developed to ensure a wider-angle view of the operative field (or only wider-angle view), with improved ADR. Olympus has been developing the "extra-wide-angle-view colonoscope", which has two lenses -- a lateral-backward view lens in addition to a standard angle forward view lens. Two views from both lenses are simultaneously constructed and displayed on a video monitor as a single image. This novel colonoscope is expected to be a valuable tool for colorectal cancer screening. | |