Effectiveness of the near-infrared electronic endoscope for diagnosis of the depth of involvement of gastric cancers
Background: Near-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope system and evaluated its usefulness for assessing the depth of involvement of gastric cancers. Methods: A total of 61 patients with depress...
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| Published in | Gastrointestinal endoscopy Vol. 52; no. 6; pp. 755 - 762 |
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| Main Authors | , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
New York, NY
Mosby, Inc
01.12.2000
Elsevier |
| Subjects | |
| Online Access | Get full text |
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| Abstract | Background: Near-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope system and evaluated its usefulness for assessing the depth of involvement of gastric cancers.
Methods: A total of 61 patients with depressed or ulcer-ated gastric cancers underwent infrared endoscopy after intravenous injection of indocyanine green.
Results: Intramucosal cancers were observed as tumors with or without a homogeneous tumor stain, whereas submucosal or deeper cancers were observed as tumors with an inhomogeneous stain or with pooling of the dye. Histologic examination showed staining properties of gastric cancers were significantly correlated with the characteristics of the vascular bed. The accuracy for depth of cancer invasion was 89% for mucosal cancers and 89% for submucosal or deeper cancers.
Conclusion: Our new infrared electronic endoscope sys-tem was useful for distinguishing mucosal cancers from submucosal or deeper cancers either with or without ulcerative changes. |
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| AbstractList | BACKGROUNDNear-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope system and evaluated its usefulness for assessing the depth of involvement of gastric cancers.METHODSA total of 61 patients with depressed or ulcerated gastric cancers underwent infrared endoscopy after intravenous injection of indocyanine green.RESULTSIntramucosal cancers were observed as tumors with or without a homogeneous tumor stain, whereas submucosal or deeper cancers were observed as tumors with an inhomogeneous stain or with pooling of the dye. Histologic examination showed staining properties of gastric cancers were significantly correlated with the characteristics of the vascular bed. The accuracy for depth of cancer invasion was 89% for mucosal cancers and 89% for submucosal or deeper cancers.CONCLUSIONOur new infrared electronic endoscope system was useful for distinguishing mucosal cancers from submucosal or deeper cancers either with or without ulcerative changes. Near-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope system and evaluated its usefulness for assessing the depth of involvement of gastric cancers. A total of 61 patients with depressed or ulcerated gastric cancers underwent infrared endoscopy after intravenous injection of indocyanine green. Intramucosal cancers were observed as tumors with or without a homogeneous tumor stain, whereas submucosal or deeper cancers were observed as tumors with an inhomogeneous stain or with pooling of the dye. Histologic examination showed staining properties of gastric cancers were significantly correlated with the characteristics of the vascular bed. The accuracy for depth of cancer invasion was 89% for mucosal cancers and 89% for submucosal or deeper cancers. Our new infrared electronic endoscope system was useful for distinguishing mucosal cancers from submucosal or deeper cancers either with or without ulcerative changes. Background: Near-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope system and evaluated its usefulness for assessing the depth of involvement of gastric cancers. Methods: A total of 61 patients with depressed or ulcer-ated gastric cancers underwent infrared endoscopy after intravenous injection of indocyanine green. Results: Intramucosal cancers were observed as tumors with or without a homogeneous tumor stain, whereas submucosal or deeper cancers were observed as tumors with an inhomogeneous stain or with pooling of the dye. Histologic examination showed staining properties of gastric cancers were significantly correlated with the characteristics of the vascular bed. The accuracy for depth of cancer invasion was 89% for mucosal cancers and 89% for submucosal or deeper cancers. Conclusion: Our new infrared electronic endoscope sys-tem was useful for distinguishing mucosal cancers from submucosal or deeper cancers either with or without ulcerative changes. |
| Author | Sakai, Noriko Tatsuta, Masaharu Yano, Hiroyuki Iishi, Hiroyasu Ishiguro, Shingo Iseki, Kazushige |
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| Cites_doi | 10.1016/S0016-5107(98)70223-8 10.1055/s-2007-1021525 10.1093/ajcp/96.1.25 10.1055/s-2007-1005787 10.1055/s-2007-1009066 10.1007/BF02052450 10.1016/S0016-5107(92)70426-X 10.1126/science.2432664 10.1055/s-2007-1021641 10.1016/S0016-5085(98)70474-3 10.1055/s-2007-1012852 10.1002/(SICI)1097-0215(19990531)81:5<730::AID-IJC11>3.0.CO;2-Q 10.1007/s005350050356 10.1016/S0016-5107(95)70341-1 |
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| Keywords | Characterization Human Near infrared radiation Stomach Clinical stage Digestive diseases Endoscopy Gastroscopy Malignant tumor Gastric disease Penetration depth |
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| Snippet | Background: Near-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic... Near-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope system and... BACKGROUNDNear-infrared light penetrates deeply into tissue but is not visible with a conventional endoscope. We developed a new infrared electronic endoscope... |
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| SubjectTerms | Adult Aged Analysis of Variance Biological and medical sciences Coloring Agents Digestive system. Abdomen Endoscopy Female Gastric Mucosa - pathology Gastroscopes Gastroscopy - methods Humans Indocyanine Green Infrared Rays Investigative techniques, diagnostic techniques (general aspects) Male Medical sciences Middle Aged Observer Variation Probability Prospective Studies Sensitivity and Specificity Severity of Illness Index Stomach Neoplasms - diagnosis Stomach Neoplasms - pathology |
| Title | Effectiveness of the near-infrared electronic endoscope for diagnosis of the depth of involvement of gastric cancers |
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