Left main coronary artery disease is a major form of CAD .
A long left main by virtue of it’s surface area statistically , are more prone for atherosclerosis as it preferentially affect the proximal vessel.A long and tubular leftmain generally give the LCX branch at right angles(In the above pateint it is 90*).This makes interventions in Lcx difficult.
A short leftmain or absent leftmain could be a blessing for the simple reason these people have the unique freedom from developing left main disese the dreaded form of CAD !
Have a look at this angiogram
Dr.S.Venkatesan MD 
Leave a comment