Study of the clinical application of PDT to the treatment of alimentary tract cancer and precancerous gastric diseases

Ying Sun; Shichang Guan

doi:10.1117/12.137003

5 March 1993 Study of the clinical application of PDT to the treatment of alimentary tract cancer and precancerous gastric diseases

Ying Sun, Shichang Guan

Author Affiliations +

Proceedings Volume 1616, International Conference on Photodynamic Therapy and Laser Medicine; (1993) https://doi.org/10.1117/12.137003
Event: International Conference on Photodynamic Therapy and Laser Medicine, 1991, Beijing, China

Abstract

Fifty-seven patients suffering from alimentary tract cancer or precancerous gastric diseases were treated in three years. Forty-five were males and 12 were females, ages 41 to 83. The argon laser used had a wavelength of 5145 ampere degree(s), a power output of 100 J/cm². The validity of diagnosis by fluorescence against pathological diagnosis in regard to 22 of the 57 patients was 86.4%. The full spectrum argon laser and pump dye laser had a wavelength of 6300 ampere degree(s) and a power output of 200 - 400 J/cm². The total validity was 93%. The survival rate for a half year was 92.3%; for one year, 86.5%; and for two years, 68.3%. Selective function of PDT on cancerous tissues is harmless to normal ones and without side effects. PDT may have palliative effects on advanced alimentary tract cancer. It is very effective in treating the second and third degree untypical hyperplasia of precancerous gastric diseases.

Citation Download Citation

Ying Sun and Shichang Guan "Study of the clinical application of PDT to the treatment of alimentary tract cancer and precancerous gastric diseases", Proc. SPIE 1616, International Conference on Photodynamic Therapy and Laser Medicine, (5 March 1993); https://doi.org/10.1117/12.137003

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