"Burnt out" dilated hypertrophic cardiomyopathy causing acute LVAD thrombosis.

Case report illustrates obstruction encountered in a patient with end-stage dilated hypertrophic cardiomyopathy (HCM) who underwent LVAD implantation. The morphology reversed in early postoperative period to HCM. Pump replacement required coring of the ventricular muscle. Dilated end-stage hypertrophic cardiomyopathy can revert back to the original morphology on decompression.