A diagnosis of anomalous pulmonary arteries is seldom made before surgery. Preoperative recognition of this condition is most important in cases of pulmonary disease requiring surgery of a lower lobe. The severance of such a vessel may result in exsanguination. In such a case we found the EPA (erect posterior-anterior roentgenogram) of the chest and the planogram to be of great aid in making the diagnosis.
Anomalous pulmonary arteries are frequently associated with another congenital defect, called intralobar sequestration of the lung. This latter condition consists of normal or polycystic lung substance within normal lung tissue. The abnormal pulmonary mass may have no bronchial drainage or may be supplied by a normal bronchial tree which is closed at the hilus; occasionally, the sequestrated lung tissue is associated with an abnormal bronchus which courses inferiorly towards the diaphragm. When the lung is involved in a pneumonic process, this sequestrated tissue similarly
LANDRY SF, SALATICH JS. Anomalous Pulmonary Arteries. AMA Arch Surg. 1955;70(3):411–413. doi:10.1001/archsurg.1955.01270090089019
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