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744 within the apical and inferolateral segments of the left ventricle (Figure F). Endomyocardial bi‐ opsy was not performed because of the high risk of bleeding. The patient received oral anticoagulants, β‐blockers and amiodarone to diminish the risk of ventricular arrhythmia. An implantable cardio‐ verter‐defibrillator (ICD) was used to prevent sud‐ den cardiac death. During follow‐up, a daily dose of amiodarone was reduced by half because of the abnormal levels of thyroid‐stimulating hormone. Four years later, “electrical storm” occurred and the former higher dose of amiodarone was re‐ stored (200 mg daily), which proved to be effec‐ tive for arrhythmia prevention. A supplementa‐ tion with thyroxine was initiated because of im‐ paired thyroid function. A 30‐year‐old man was referred to our hospi‐ tal because of sustained ventricular tachycar‐ dia, which occurred when he was playing soccer (Figure A). Electrocardiography showed normal sinus rhythm with deep negative T waves in in‐ ferior and lateral leads (Figure B). Echocardiog‐ raphy revealed a giant tumor in the left ventri‐ cle, protruding into the ventricular chamber and deforming the papillary muscles (Figure C). An‐ giography demonstrated rich vascularization of the tumor from both coronary arteries (Figure D). Cardiac magnetic resonance showed the areas of fibrosis and calcification within the tumor (Figure e). Positron emission tomography exclud‐ ed malignant tissue proliferation. Gated single photon emission computed tomography with technetium sestamibi showed no perfusion

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Giant tumor of the left ventricle presenting with sustained ventricular tachycardiaGiant tumor of the left ventricle presenting with sustained ventricular tachycardia