Objective To observe the effects and safety of intra-thoracic or intraperitoneal administration of bevacizumab(Bev) in patients with malignant pleural effusion or ascites,and to explore the potential factors that influence the efficiency.Methods Clinical data of sixty-one cases with malignant pleural effusion or ascites who received intra-cavity injection of drugs were retrospectively analyzed,of which twenty-four patients were injected with bevacizumab-contained regimens,and thirty-seven patients were inje...