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Epipericardial fat necrosis is a significant clinical condition. For patients seen in the emergency department with isolated acute chest pain but no additional clinical history, no medication history, and normal laboratory results, chest CT is recommended to support a diagnosis of epipericardial fat necrosis.

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Purpose Evaluate chest computed tomography (CT) findings of laboratory-confirmed Coronavirus Disease 2019 (COVID-19) cases and correlate it with clinical and laboratorial signs of severe disease and short-term outcome. Methods Chest CTs of 61 consecutive cases of COVID-19 disease that attended in our emergency department (ED) were reviewed. Three groups of patients classified according to the short-term follow-up were compared: (1) early-discharged from ED, (2) hospitalized on regular wards, and (3) admitted to intensive care unit (ICU). CT findings were also correlated with clinical and laboratorial features associated with severe disease. Results Median age was 52 years (IQR 39-63) with male predominance (60.7%). Most of the patients that did not require hospitalization had parenchymal involvement of less than 25% on CT (84.6%). Among hospitalized patients, interlobular septal thickening and extensive lung disease (> 50% of parenchyma) were significantly more frequent in ICU-admitted patients (P = 0.018 and P = 0.043, respectively). Interlobular septal thickening also correlated with longer ICU stay (P = 0.018). Low oxygen saturation (SpO 2 ≤ 93%) was associated with septal thickening (P = 0.004), diffuse distribution (P = 0.016), and pleural effusion (P = 0.037) on CT. All patients with > 50% of parenchymal involvement showed SpO 2 ≤ 93%. Elevated C-reactive protein (CRP) levels (> 5.0 mg/dL) correlated with consolidation (P = 0.002), septal thickening (P = 0.018), diffuse distribution (P = 0.020), and more extensive parenchymal involvement (P = 0.017). Conclusion Interlobular septal thickening on CT was associated with ICU admission and longer stay on ICU. Diffuse distribution, septal thickening, and more extensive lung involvement correlated with lower SpO 2 and higher CRP levels. Patients that needed hospitalization and ICU admission presented more extensive lung disease on CT.