ok, if a person has significant pulmonary artery stenosis, what would
the signs be on a chest x-ray, if any?

an x-ray that shows increased perihlar and interstitial markings (and
the mild retention in the wash-out phase of a V/Q scan), would those
be possible markers for a PA stenosis?

is there anything else (defect wise) apart from the congenital PAS,
that I should be on the look-out for or the doc should be?