PHOTORADIATION THERAPY: PROBLEMS AND NEW CONSIDERATIONS

Abstract

Using photoradiation therapy (PRT), 16 cases of digestive tract cancer were treated with SP171-SP375 and PRT 102. In 9 of them resection surgery was carried out after PRT. Complete disappearance was confirmed in 2 cases out of 6 early gastric cancer. In the other 4 cases cancer remain ed in the sm layer and epithelium of the margin of the new induced ulcer. As side effects of PRT clear sunburn was noted and stomach ache and severe nausea were complaint. Fundamental studies were also carried out. Combination of Argon and YAG laser and the widespread irradiation by the contact type rod should be regarded as new treatment method.