Clinical observation of next-generation photodynamic therapy (NGPDT) for advanced non-small cell lung cancer.

Abstract

e19028 Background: Clinical observation of next-generation photodynamic therapy (NGPDT) for advanced non-small cell lung cancer (NSCLC). Methods: Through pathology or cytology diagnosis, 66 cases of advanced non-small cell lung cancer patients were selected and randomly divided into two groups. The Next Generation Photodynamic Therapy (NGPDT) group had 32 patients. Photosensitizer was administered on a dosage of 2 mg per kilogram of body weight, wherein two-thirds via ultrasonic atomization inhalation and one-third via oral intake. After the irradiation target(s) were determined, optical fiber for laser treatment purposes was guided into lung tumor(s) via interstitial procedure, percutaneous puncture under precious laser navigation, irradiation light intensity was 200 J/cm2, irradiation power was 1,000 mw, activation was then started and lasted for eight to ten minutes, laser irradiation into tumor was two to five centimeters in length, irradiation could be performed phase by phase (sub-paragraph treatment) based on tumor size or irradiations could be performed repeatedly. While in the mean time in the chemotherapy/radiotherapy group (external beam radiotherapy + whole body chemotherapy) 34 cases were observed, 15 MV X ray radiation therapy irradiation field covers primary lung tumor lesion(s) and mediastinal lymphatic drainage area, dosage was 65-70 Gy, on every first day in a week of radiotherapy, 20 mg cisplatin was administered via intravenous application. Results: In the NGPDT group and simultaneous radiotherapy/chemotherapy group, one and two years survival rate were 93.75%, 70.60% and 68.75, 32.35% respectively (P <0.05). The complete remission rate and partial remission rate were 56.20% and 21.30%, rate of the NGPDT group was significantly higher than that of the corresponding radiotherapy and chemotherapy group, the difference was statistically significant (P <0.05). Conclusions: NGPDT can prolong survival in patients with advanced NSCLC, improving their quality of life; it is one of the most effective measures for advanced non-small cell lung cancer treatment.