Evaluation of clinical efficacy
All patients in the combined treatment group were followed up after surgery, and the patients and their families cooperated to complete the evaluation of various efficacy indicators. At the end of the study, 14 of the 31 patients survived. Similarly, all patients in the pure PVP group were followed up after surgery, and they were willing to cooperate in evaluating various efficacy indicators. At the end of the study, five of the 31 patients survived.