Abstract
Coronavirus disease (COVID-19) is an infectious disease caused by severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2), which is an enveloped single-stranded RNA virus
belonging to the family of betacoronaviruses. Chest computed tomography (CT) has helped
us in understanding this new disease. Typical CT features of COVID-19 pneumonia are
ground-glass opacities (GGO), crazy paving pattern and GGO with superimposed consolidation
with a basal, posterior and peripheral lung predilection. Less commonly bronchial
wall thickening, bronchial dilatation and pleural thickening are seen. Presence of
pleural effusion, pericardial effusion and mediastinal lymphadenopathy is seen in
severe cases. Reticulations, fibrous stripes, reverse halo sign and perilobular opacities
are seen late (>2 weeks) in the course of illness. We aim to present a pictorial review
of CT imaging findings in COVID-19 to illustrate the typical and atypical manifestations
of this disease in a bid to familiarize radiologists with the myriad imaging manifestations
of this disease.
Keywords
COVID-19 - CT - Ground-glass opacity - SARS-CoV-2 - segmental pulmonary vessel enlargement
