A rare connection by newly formed conduit vessels between the left internal mammalian artery and radial artery bypass grafts after failure of grafts.

Neovascularization such as formation of collateral vessels following total occlusion of native coronary artery is common in coronary artery disease. This is a case report of a very rare connection by newly formed conduit vessels between the left internal mammalian artery and the radial artery establishing bypass, which occurred after failure of bypass grafts.