| Theme | Laterally spreading tumor (LST) -- Toward a new era | |
|---|---|---|
| Title | Endoscopic diagnosis of LST -- Present situation and limitations | |
| Publish Date | 2014/01 | |
| Author | Yasuhiko Maeyama | Division of Gastroenterology, Department of Medicine, Kurume University Suhool of Medicine / Department of Endoscopy, Center for Gastroenterology, Kurume University Suhool of Medicine |
| Author | Osamu Tsuruta | Division of Gastroenterology, Department of Medicine, Kurume University Suhool of Medicine / Department of Endoscopy, Center for Gastroenterology, Kurume University Suhool of Medicine |
| Author | Tetsuhiro Noda | Division of Gastroenterology, Department of Medicine, Kurume University Suhool of Medicine / Department of Endoscopy, Center for Gastroenterology, Kurume University Suhool of Medicine |
| Author | Shuichiro Nagata | Division of Gastroenterology, Department of Medicine, Kurume University Suhool of Medicine / Department of Endoscopy, Center for Gastroenterology, Kurume University Suhool of Medicine |
| Author | Hiroshi Kawano | Department of Gastroenterology, St. Mary's Hospital |
| Author | Keiichi Mitsuyama | Division of Gastroenterology, Department of Medicine, Kurume University Suhool of Medicine / Department of Endoscopy, Center for Gastroenterology, Kurume University Suhool of Medicine |
| Author | Michio Sata | Division of Gastroenterology, Department of Medicine, Kurume University Suhool of Medicine / Department of Endoscopy, Center for Gastroenterology, Kurume University Suhool of Medicine |
| [ Summary ] | We previously reported that larger lesions are associated with early cancer and are higher in patients with LST-G. On the other hand, LST-NG are associated with smaller lesions than LST-G. Rates of invasive cancer were higher than observed with LST-G. Investigation of macroscopic findings of invasive cancer revealed lesions exhibiting elevation with swelling. These are a very important sign for diagnosis of invasive cancer. Tubercles associated with LST-G-M and ulcers, and VN type pit patterns, may indicate a diagnosis of invasive cancer. VI type or VN type pit patterns associated with LST-NG-PD may indicate a diagnosis of invasive cancer. The NBI method may be employed to treat invasive LST-NG-PD cancer exhibiting avascular patterns. When invasive cancer appears on the surface of lesions, the surface pattern of those lesions can not be recognized. Use of EUS in hypoechoic third layer areas to treat lymph follicle or fibroid lesions, may lead to overestimation in diagnosis of invasive cancer. |
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