Major Aortopulmonary Collateral Arteries

Society of Chest Imaging and Interventions Consensus Guidelines for the Interventional Radiology Management of Hemoptysis

“…Noncommunicating MAPCAs (i.e., essential MAPCAs) form the sole blood supply to the lung segment in the absence of a native pulmonary artery blood supply. 64 Communicating MAPCAs supplying abnormal lung segments/dilated bronchi can be embolized with due caution.…”

Congenital Heart Disease Illustrated

“…Nevertheless, the use of CT can at least postpone the diagnostic timing of cardiac catheterization to a time when the neonate has transitioned and has started growing; it also provides a roadmap for the interventionalist. The CT should document each MAPCA, their size, origins (beyond descending aorta, may also arise from innominate or subclavian arteries) and their course 55 . CT should clarify the size and arborization of the central pulmonary arteries.…”

“…The CT should document each MAPCA, their size, origins (beyond descending aorta, may also arise from innominate or subclavian arteries) and their course. 55 CT should clarify the size and arborization of the central pulmonary arteries. For TOF with APV, the CT should also assess the location and severity of bronchial tree compression by the aneurysmal pulmonary arteries (Fig.…”

Major aortopulmonary collateral artery aneurysms—A rare cause of airway narrowing

“…When the pulmonary arterial tree is underdeveloped, such as in pulmonary stenosis or atresia, aortopulmonary collaterals act as systemic to pulmonary shunts and maintain blood supply to the lungs. 1,2 MAPCAs with caliber >3 mm are usually characterized by high systemic pressure. Aneurysm formation and segmental pulmonary hypertension are known complications of hypertensive MAPCAs.…”

“…Aneurysm formation and segmental pulmonary hypertension are known complications of hypertensive MAPCAs. 1 Airway compression by MAPCAs is rare. Compression of central airways may present with choking episodes and respiratory distress.…”