WELCOME TO THE COMMUNITY .. I think Estrelinha has given you great advice .. are these cysts anything to do with the heart? If so, we have a great heart community and the CL I am sure will stop by to offer more advice, too, but I'm not familiar with this type of cyst at all.
C~
Of course you must find out what kind of cysts you have. There are cysts that are caused by larvae of Echinococcus granulosus. Your doctor knows how to differenciate this and if is any connection between the lump and the cysts. All cysts must be investigated.