Table 2.

Key Radiographic Findings by Organ System

Organ System	Radiographic Findings
Cardiothoracic	Lower lobe and peripheral predominant opacities Ground glass opacities or consolidations in advanced disease Septal thickening Air bronchograms Crazy paving Pleural effusions Pulmonary embolism Heart strain Myocarditis Acute coronary syndrome
Gastrointestinal	Bowel wall thickening Inflammation of adjacent mesenteric fat Small volume ascites Small bowel obstruction Mesenteric vessel occlusion and bowel ischemia
Genitourinary	Enlarged, echogenic kidneys Renal infarcts – wedge-shaped parenchymal defects
Neurologic/Neurovascular	Vasculitis pattern – punctate enhancement with extensive ischemic lesions Restricted diffusion throughout centrum semiovale, corpus callosum, basal ganglia, cerebellum Ischemic stroke Venous sinus thrombosis Hemorrhagic stroke PRES Microhemorrhages
Vascular	Venous or arterial thrombus