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Thank you for your question.
Wedge shaped lucency could be due to either a small infarct that happened in the lungs due to an embolism in the past.
Does not sound likely to be anything serious.
Emphysema is a possibility as well.
I do not think it could be anything else.
I just think that they want to be sure they get the best possible pictures on the CT scan and that is all.
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