Atrial flutter and myocardial infarction-like ECG changes as manifestations of left ventricle involvement from lung carcinoma.

Lung cancer involvement of the heart is not unusual, but in most cases is silent. Arrhythmia and electrocardiographic findings suggesting an acute myocardial infarction could be the first manifestation of myocardial infiltration by the tumour. Echocardiography could be a valuable tool to define the diagnosis in patients with lung cancer and newly diagnosed arrhythmia or ST-T wave alterations. When echocardiographics findings are not conclusive, magnetic resonance imaging (MRI) allows differentiation between tumour and myocardium.