Coronary fistula - an unexpected preanaesthetic finding.

Coronary artery fistulae are congenital vascular anomalies defined as aberrant communications between a coronary artery and a cardiac chamber, large vessel or another vascular structure. In the present case the preanaesthetic clinical assessment led to a fortuitous detection of a rare coronary artery anomaly, which changed the initial therapeutic option. A 21-year-old female patient was admitted for a right ankle fracture.