in paraplegic is a known fact , usually a clot from static blood in legs clots , flows up and gets lodged in the lungs vessels after flowing through the heart.
Usually in secondary cause of pulmonary embolism ( lung clot ) we give coumadin
for 6 months to maintain inr 2-3.
In international guidelines , we do a CT lung angiography
to see the thrombus
lysis before stopping coumadin
I WOULD STRONGLY SUGGEST TO GET A SECOND OPINION
FOR A REDO CT , PLUS AS YOU HAVE A RISK FACTOR OF PARAPLEGIC SO I WOULD RECOMMEND LONG TERM BABY ASPIRIN TO PREVENT RE -LUNG-EMBOLISM.
Hope that helps.