ENDOSCOPIC OBSERVATION OF FLUORESCENCE OF COLORECTAL CANCER EXCITED BY ARGON-LASER-LIGHT STIMULATION
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概要
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Stimulating cancerous lesion in the colon and rectum by argon laser light of 488 and 515.5nm wave length transmitted through a light-guiding glass fiber bundle of an endoscope, we endoscopically observed fluorescence excited in the cancerous tissue using special filter (Kodak Wratten gelatin filter) without oncotropic photosensitive agents. Regardless of size, advanced cancers clearly showed orange red fluorescence rather densely on the marginal wall of the tumors in 17 of 22 cases studied. The clear fluorescence of orange red color was densely viewed also on the ulcer bed of the craters in 7 of 22 cases. In all 5 cases of early rectal cancer, the tumor was ovserved dark orange, and spotty or patchy fluorescence of the orange red color was spasely viewed on the tumor. As it is still difficult for ordinaly endoscopy with natural light to detect early colorectal cancer today, the endoscopic observation of fluorescence of colorectal cancer excited by argon laser is considered significant, and this method would be an usefull diagnostic procedure for early detection of cancer in the large intestine.
- 社団法人 日本消化器内視鏡学会の論文
社団法人 日本消化器内視鏡学会 | 論文
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