Spontaneous Left Main Coronary Artery Dissection Presenting with Acute Myocardial Infarction in an Elderly Male: A Clue from the Collateral Flow

Spontaneous Coronary Artery Dissection (SCAD) is a rare cause of Acute Myocardial Infarction (AMI), which usually occurs in young or middle-aged healthy females. Here, we reported a 62-year-old male having SCAD in the Left Main Coronary Artery (LMCA) presenting with AMI. In this case, we could diagnose a spontaneous LMCA dissection with the help of contrast dye staining at the end of the collateral flow from the Right Coronary Artery (RCA). Even a small amount of contrast dye staining at the end of the collateral flow from the RCA provides an important clue for suspecting spontaneous LMCA dissection. Meticulous catheter manipulation should be required in such cases to prevent the extension of iatrogenic catheter-dissection during the procedure.