Target sign in COVID-19

Case contributed by Dr Arvind Aggarwal

Presentation

Fever, cough, dyspnea and mild abdominal pain (COVID-19 PCR positive).

Patient Data

Age: 50 years
Gender: Male
CT

Multifocal regions of ground glass opacities with areas of consolidation at places seen in both the lungs with peripheral predominance 

Multiple nearly rounded target like lesions seen in right upper lobe and both the lower lobes

No pleural and pericardial effusion . 

Case Discussion

Target sign is defined as a nodular opacity in the center with peripheral ring-like area of ground glass opacity and consolidation.

The central nodular opacity is thought to reflect the perivascular inflammation or focal enlargement of the pulmonary artery. The ring-like opacities represent the underlying pathophysiological mechanism of the disease of the lung injury.

Result of perivascular inflammation and organizing pneumonia.

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