SARS CoV-2 causes diffuse alveolitis. Most patients have bilateral involvement and typical findings are multiple areas of consolidation and ground glass opacities.
In some cases, CT findings included pleural effusions, a tubular and enlarged appearance of pulmonary vessels with a sudden caliber reduction and mediastinal lymphadenopathy. Emergence of CT abnormality before symptoms could be consistent with the existence of an asymptomatic carrier state. These findings can be seen even before symptoms emerge.