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Brief Title: Usefulness of Near-focus With Narrow-band Imaging
Official Title: Usefulness of Near-focus With Narrow-band Imaging for Determining Gastric Tumor Margin
Study ID: NCT02661945
Brief Summary: Near-focus with narrow-band imaging is a novel technique to improve the quality of images of the irregular mucosal structures and microvessels of gastric neoplasms. The investigators compare this technique with indio carmin spray, commonly used tool to determine tumor margin. The subject are patients who underwent endoscopic submucosal dissection for gastric neoplasms. Participants are randomized into near-focus with narrow-band imaging and indigo carmin groups. First, marking is performed at the tumor margins determined by each modality. The distance from the marking dots to the tumor margin is measured histopathologically in the resected specimens. Finally, the investigators will compare the accuracy between two groups based on the distance from marking dots to tumor margin measured by histopathologic examination.
Detailed Description:
Minimum Age: 19 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: ALL
Healthy Volunteers: No
Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Chungcheongnam-do, Korea, Republic of
Korea University Medical Center, Seoul, Seongbuk-gu, Korea, Republic of
Inha University School of Medicine, Incheon, , Korea, Republic of
Pusan National University School of Medicine, Pusan, , Korea, Republic of
Kyung Hee University Hospital, Seoul, , Korea, Republic of
Severance Hospital, Yonsei University College of Medicine, Seoul, , Korea, Republic of
Soonchunhyang University Hospital, Seoul, , Korea, Republic of