Dual left anterior descending coronary artery with origin of short left anterior descending coronary artery from left main shaft: a rare coronary anomaly.

Dual left anterior descending (LAD) coronary artery with separate origin of the short LAD from the left main (LM) coronary artery is very rare and not reported in the literature. A 49-year-old male was admitted with history of mid-sternal chest pain at rest. He underwent coronary angiography, which showed normal origin of the left and right coronary arteries. A LAD branch (short LAD) with an early take-off from the LM entered the proximal interventricular groove and gave rise to the septal branches. The LM then divided into the circumflex branch and the other LAD branch (long LAD), which ran on the left ventricular side of the interventricular groove and entered the groove distally. The major diagonals originated from the latter LAD.