i had the worst pec minors, not vascular but they were VERY very tight and tingly
i started out doing what chroma posted and the progressed to this
http://www.youtube.com/watch?v=WqtiwdRp6vQ
also i "milk" lol the only way i know to describe it..the area under my coracoid process, i just keep pushing into it with my fingers, it used to be tender but now its not.
my shoulder muscles are weak so i know i have to keep donig this but hopefully less and less as they get stronger and i dont have to use my pec minor to hold my shoulder up
its absolutely made a huge difference, now i can do some exercises i couldnt do before, i wouldnt get pec minor surgery unless its vascular