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Risk of Pulmonary Embolism After Negative MDCT Pulmonary Angiography Findings

E. C. Kavanagh1, A. O'Hare, G. Hargaden and J. G. Murray

1 All authors: Department of Radiology, Mater Misericordiae Hospital, Eccles St., Dublin 7, Ireland.



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  		Fig. 1A. —50-year-old man with dyspnea and chest pain after coronary artery bypass surgery. MDCT pulmonary angiogram shows healthy right lower lobe pulmonary artery.

 


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  		Fig. 1B. —50-year-old man with dyspnea and chest pain after coronary artery bypass surgery. Scan through right lower lobe shows subtle filling defects (arrow) in subsegmental lower lobe artery. This finding was initially missed.

 


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  		Fig. 1C. —50-year-old man with dyspnea and chest pain after coronary artery bypass surgery. MDCT pulmonary angiogram obtained 20 days after A shows filling defect (arrow) at similar level to that seen in A in right lower lobe pulmonary artery, indicating progression of pulmonary emboli.

 


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  		Fig. 2. —41-year-old woman with dyspnea and chest pain. MDCT pulmonary angiogram shows arteriovenous malformation with draining vein (arrow) at right lung base.

 


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  		Fig. 3A. —74-year-old man with hemoptysis and chest pain. MDCT pulmonary angiogram obtained at level of left atrium shows left hilar mass (arrow).

 


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  		Fig. 3B. —74-year-old man with hemoptysis and chest pain. Additional scan obtained at lower level shows metastasis with aortic and vertebral body (arrow) invasion.

 


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  		Fig. 3C. —74-year-old man with hemoptysis and chest pain. Additional scan obtained of upper abdomen shows right adrenal metastasis (arrow). Bronchoscopic biopsy showed small cell carcinoma.

 

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