A rare coronary artery abnormality: type IV double left anterior descending artery

Double left anterior descending (LAD) coronary artery arising from both the left and right coronary arteries is a very rare congenital abnormality. A 40-year-old male patient presented with dyspnea. Coronary angiography showed no signs of atherosclerosis. The left anterior descending artery terminated before reaching the apex. Another coronary artery that arose from the proximal of the right coronary artery reached the apex. Multislice computed tomographic angiography showed double LAD originating from the left and right coronary arteries. The patient was informed about the abnormality and was discharged to be monitored without medications.