Coronary Artery Fistulae Discovered during Presentation of a
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Introduction
Coronary artery fistulae are communications between a coronary artery with either a chamber of the heart or any segment of the systemic or pulmonary circulation; it has a rare occurrence seen in only 0.1-0.2% of coronary angiography (CAG). In the first two decades of its occurrence, CAF usually causes no symptoms or complications but can occur in older age. Most frequent complications include steal syndrome, thrombosis, embolism, rupture, cardiac failure, and arrhythmias. We describe a case of a rare type of multiple CAF in a 56-year-old male who presented with symptoms of heart failure due to severe aortic stenosis.

Case Presentation
A 56-year-old Saudi male referred to our hospital for evaluation of dyspnea New York Heart Association (NYHA) class III started six months before and had progressed to NYHA class IV two weeks prior to admission. The patient denied having any chest pain, palpitation, or dizziness. He had no risk factors for coronary artery disease (CAD)....

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4247939/
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