Background: The aim of the study is to investigate the pulmonary CT signs in patients with confirmed COVID-19 infection. This study included 100 patients, 54 male and 46 female their ages ranged from 6 to 85 years. All Patients tested positive for COVID-19 infection by RT-PCR test included in this study. All the patients performed pulmonary CT scan and the CT findings were evaluated.Results: 90 patients (90%) had abnormal pulmonary CT. Two lungs affected in 79 patients (79%). Lesions involved 1

more »

... lobe (11%), 2-3 lobes (35%) and 4-5 lobes (44%). The most involved pulmonary lobes were right lower lobe (77 patients, 77%), followed by left lower lobe (71 patients, 71%), the most involved pulmonary segments were posterior segments (69 patients, 69%),peripheral sub-pleural lesions were the commonest lesions location (64 patients, 64%). The most common lesions pattern were ground glass pattern (44 patients, 44%), followed by mixed ground glass and consolidation patterns (33 patients, 33%). The commonest lesion shape was patchy opacities (40 patients, 40%). Reversed halo sign (28 patients, 28%), air bronchogram sign (39 patients, 39%), crazy paving pattern (77 patients, 77%), vascular thickening (66 patients, 66%), and pleural thickening (7 patients, 7%) CONCLUSION: The main pulmonary CT signs in patients with COVID-19 infection are bilateral, peripheral, multi-lobar patchy and nodular Ground glass opacification with or without consolidation. Other signs may also present include crazy paving pattern, reversed halo sign vascular thickening, and air bronchogram sign with no extra-pulmonary signs except for few pleural thickening.