| 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) |
| 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. |