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A hypoattenuated nonenhancing intraluminal thrombus measuring 6.1x1.7cm in the right pulmonary artery extending from the bifurcation of the pulmonary trunk to the lower lobar segmental branches. The thrombus is resulting in subtotal ( > 80-85% ) luminal obstruction.
A soft tissue attenuation nodular lesion with cavitation is noted in the subpleural region of superior basal segment of right lower lobe lobe representing pulmonary infarct with secondary infection.
The diameter of main pulmonary trunk exceeds the diameter of aortic arch.