Photodynamic Diagnoses of Malignant Pleural Diseases Using the Autofluorescence Imaging System
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概要
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Background: We conducted a study on photodynamic diagnosis (PDD) using autofluorescence in video-assisted thoracic surgery for minute intrathoracic small dissemination or early malignant pleural mesothelioma.Methods: Autofluorescence is the spontaneous emission of light that occurs when mitochondria, lysosomes, and other intracellular organelles absorb light. In normal tissues, green autofluorescence of approximately 520 nm is observed in response to 400–450 nm blue excitation rays. However, in cancer lesions, green autofluorescence is reduced due to thickening of the mucosal epithelium, a decrease in autofluorescent substances, etc., and the color spectrum thus shifts to red-violet. This phenomenon is the basis of PDD.Results: The color spectrum shift was observed in all tumors located on the pleural surface but not in cases with pleural fibrous disease. Among patients with primary lung cancer, those with pleural infiltration (pl) scores of 1 or greater showed color spectrum shifts due to reduced autofluorescence.Conclusion: Localization of pleural lesions by autofluorescence imaging was found to be useful. In primary lung cancer cases, differentiation between pl0 and pl1 lesions appears to be useful for determining therapeutic strategies including surgical procedures.
- Annals of Thoracic and Cardiovascular Surgery 編集委員会の論文
著者
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Ohsaki Yoshinobu
Department Of Internal Medicine Cardiovascular Respiratory And Neurology Division Asahikawa Medical
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ISHIBASHI Kei
Department of Urology Fukushima Medical University
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Hayashi Satoshi
Department Of Applied Chemistry Faculty Of Engineering Doshisha University
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Matsuda Yoshinari
Department of Respiratory Center, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
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Kitada Masahiro
Department of Respiratory Center, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
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- Photodynamic Diagnoses of Malignant Pleural Diseases Using the Autofluorescence Imaging System