Vertebral arteria lusoria: a life-threatening condition for oesophageal surgery.

A rare anatomic variant of the right vertebral artery is reported as an incidental finding in a 78-year-old female patient. The vessel originated from the aortic arch distal to the origin of the left subclavian artery and presented an unusual retroesophageal course, thus was named "vertebral arteria lusoria". As multi-detector row computed tomography examination is now widely used, this anatomical variant should be considered in any patient undergoing esophageal surgery. Misdiagnosis of such an aberrant vertebral artery may cause life-threatening issues.