PMC3658205_01
Filling defect in the right main pulmonary artery.. Abbreviations: AA, ascending aorta; DA, descending aorta; LDPA, left descending pulmonary artery; PT, pulmonary trunk; RB, right bronchus; RPA, right pulmonary artery; SVC, superior vena cava.
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Urgent pulmonary CT angiography showed a large filling defect in the right main pulmonary artery (PA) (Figure 1) and a number of smaller defects in the peripheral PA branches.
Lung perfusion scan.. Abbreviations: RAO, right anterior oblique; LPO, left posterior oblique.
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Subsequent lung perfusion scan showed good perfusion of all lung units (Figure 2).