To the Editor, Post-discharge mortality in patients with coronavirus disease 2019 (COVID-19) is an important yet unraveled aspect of this disease. In a study in UK, mortality was reported to occur in 13.4% of patients with COVID-19 after discharge from hospital. 1 In our study, we reviewed a total of 1078 patients with COVID-19 pneumonia who underwent chest computed tomography (CT) at Baqiyatallah Hospital, Tehran, Iran, and were hospitalized from March to April 2020. 2 Data were extracted from hospital registry records including age, sex, date of admission, date of discharge, history of readmission, mortality (in-hospital or out-of-hospital), and chest CT scan information including lesion distribution, opacity score and underlying disease (according to chest CT).The mean age of study population was 53 ± 14.38 years, and 773 patients (68.4%) were men. The lesion type of 414 patients (38.4%) was only ground-glass opacification/opacity (GGO), 133 (12.3%) was GGO plus crazy paving, 42 (3.9%) was consolidation only, and 489 (45.4%) was GGO plus consolidation.