Abstract
Cardiac perforation and intracardiac thrombosis are infrequent complications after implantable cardioverter-defibrillator (ICD) implantation, and a case of lead perforation complicated by thrombosis is extremely rare. We report the case of a 66-year-old man with delayed ICD lead perforation concomitant with intracardiac lead thrombosis successfully treated by anticoagulant therapy followed by transvenous lead management.