Incidence of venous thromboembolism in esophageal cancer:a real-world study of 8 458 cases
Objective To investigate the incidence of venous thromboembolism(VTE)in patients with esophageal cancer(EC).Methods The retrospective cohort study was conducted.The clinicopathological data of 8 458 EC patients who were admitted to Sichuan Cancer Hospital from January 2017 to December 2021 were collected.There were 6 923 males and 1 535 females,aged(64±9)years.There were 3 187 patients undergoing surgical treatment,and 5 271 cases under-going non-surgical treatment.Observation indicators:(1)incidence of VTE in EC patients;(2)treat-ment and outcomes of patients with VTE.Measurement data with normal distribution were repre-sented as Mean±SD,and comparison between groups was analyzed using the t test.Measurement data with skewed distribution were represented as M(range),and comparison between groups was analyzed using the nonparameter rank sum test.Count data were expressed as absolute numbers or percentages,and comparison between groups was analyzed using the chi-square test or Fisher exact probability.Comparison of ordinal data was analyzed using the nonparameter rank sum test.Results(1)Incidence of VTE in EC patients.Of 8 458 EC patients,175 cases developed VTE,with an incidence rate of 2.069％(175/8 458).Among 175 VTE patients,there were 164 cases of deep venous thrombosis(DVT),4 cases of pulmonary embolism(PE),7 cases of DVT and PE.There were 59 surgical patients and 116 non-surgical patients.There was no significant difference in thrombus type between surgical and non-surgical EC patients with VTE(x2=1.95,P＞0.05).Of 3 187 surgical patients,the incidence of VTE was 1.851％(59/3 187),including an incidence of 0.157％(5/3 187)of PE.PE accounted for 8.475％(5/59)of surgical patients with VTE.Of 5 271 non-surgical patients,the incidence of VTE was 2.201％(116/5 271),including an incidence of 0.114％(6/5 271)of PE.PE accounted for 5.172％(6/116)of non-surgical patients with VTE.There was no significant difference in the incidence of VTE or PE between surgical patients and non-surgical patients(x2=1.20,0.05,P＞0.05).(2)Treatment and outcomes of patients with VTE.Among 175 EC patients with VTE,163 cases underwent drug treatment,and 12 cases did not receive treatment.Among 163 cases with drug therapy,158 cases underwent anticoagulant therapy,5 cases were treated with thrombolysis.All the 163 patients were improved and discharged from hospital.Conclusions The incidence of VTE in patients with EC is relatively low,as 2.069％.There is no significant difference in the incidence of VTE or thrombus type between surgical EC patients and non-surgical EC patients.
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