Abstract:Objective To investigate the efficacy of radiotherapy combined with high intensity focused ultrasound (HIFU) in the treatment of pancreatic cancer. Methods Totally 100 patients with advanced pancreatic cancer treated in our hospital were randomly divided into the observation group and the control group. The control group was treated with radiotherapy, and the observation group was treated with radiotherapy combined with high intensity focused ultrasound. Serological index, medical imaging index, clinical symptoms and adverse reactions were detected before and after treatment. Results After treatment, the levels of CA199, CA242, OPN, NGAL and RBP4 in the blood of the observation group were lower than those of the control group (P?0.05). The levels of ALT, AST, Cr and BUN in the blood of the patients in the observation group were lower than those in the control group (P?< 0.05). After treatment, the levels of DJ-1 and miR-155 in the blood of the two groups were decreased, and the levels of DJ-1 and miR-155 in the blood of the observation group were lower than those of the control group, the difference was statistically significant (P?< 0.05). The echo of the patients in the observation group was enhanced in different degrees, and 5 of them had small non-echo areas. In the control group, the echo did not increase significantly. The complete relief rate of pain was 89% (41/46) in the observation group, but there was no significant relief in the control group. The appetite and weight of the patients in the observation group were improved in different degrees, but the diet and weight of the patients in the control group were not significantly relieved. After treatment, the average weight of the observation group was better than that of the control group (all P?0.05). Conclusions Intensity-modulated radiotherapy combined with high intensity focused ultrasound can effectively improve the clinical efficacy and reduce the levels of DJ-1 and miR-155 in patients with advanced pancreatic cancer.