Arq Bras Cardiol: Imagem cardiovasc. 2021; 34(3): eabc203
Left Internal Thoracic Artery Fistula to the Bronchial Artery: a Rare Cause of Coronary Flow Theft
DOI: 10.47593/2675-312X/20213403eabc203
Introduction
The left internal thoracic artery (LITA) fistula to the pulmonary artery (PA) and/or its branches is a rare condition that was first described in 1947 by Burchell and Clagett and can be acquired or congenital. Its etiologies include, trauma, infection, neoplasms, and mainly myocardial revascularization surgery (MRS)., The surgical manipulation of the intrathoracic vessels during MRS may predispose a patient to postoperative LITA fistulization to the PA, causing coronary flow leakage and myocardial ischemia. LITA should be considered an etiological diagnosis in cases of persistent angina after MRS., Its diagnosis requires coronary cineangiography,– and its treatment options include conservative drug therapy, surgical ligation, or endovascular intervention.
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