COVID-19(6) surgical(5) Lobectomy(5) fibrosis(5) lung cancer(5) was performed(5) lung cancer patients(3) initiated(3) surgical treatment(3) video-assisted thoracoscopic surgery(3) Patient(3) conversion(3) lung cancer patient(3) Treatment(3) Postoperative Complications(3) postoperative(3) Complication(3) Pathological examination(3) Coronavirus disease 2019(3) Mortality(3) Respiratory function(2) lymphocyte(2) infectious risk(2) coronavirus disease(2) treatment for COVID-19(2) thrombosis(2) RNA(2) Thoracic(2) bilateral pneumonia(2) the patient(2)