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A member asked:

Cardiac mri showed fusiform aneurysm of main pulmonary artery. report says likely due to elevated pulmonary artery pressures. what can cause chronically elevated pulmonary arterial pressure?

A doctor has provided 1 answer

Normal main pulmonary artery measures up-to 29mm in diameter. A true aneurysm is focal dilatation involving all three layers of arterial wall. Pseudoaneurysm does not involve all layers. Pulmonary arterial hypertension (PAH), pyogenic bacteria, viral & fungal infections, vasculitis & others can cause these aneurysm. PAH can be due to heart, lung or blood clotting problems, HIV infections. Helpful?

Answered 6/21/2021

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