Abstract:Objective To discuss the occurrence of lower extremity venous thrombosis (LEVT) and pulmonary embolism after nasal endoscopic surgery, improve the understanding and diagnosis level of postoperative venous thrombosis and pulmonary embolism (PE) in the lower limbs, and summarize the treatment experience.Method Clinical data of 5 patients combined with LEVT and PE from January 2020 to June 2021 were retrospectively analyzed.Result All the 5 patients presented with lower limb venous thrombosis and PE after nasal endoscopy, and were discharged safely after anticoagulant treatment.Conclusion PE was acute, high mortality rate, the incidence of concurrent PE after nasal endoscopy was low, through case analysis and literature review, to improve the otolaryngology doctors and thrombosis prevention and attention of patients after nasal endoscopic surgery, reduce the incidence of thrombosis, and early intervention, to improve the cure rate.