Paroxysmal ventricular tachycardia due to interventricular hydatid cyst.

A 35-year-old male patient with palpitations and mild lightheadedness was admitted to our clinic. Short-lasting paroxysmal ventricular tachycardia was diagnosed following 12-lead electrocardiography (ECG). A mass that included two-thirds of the interventricular septum and the left ventricular cavity was seen by two-dimensional echocardiography and magnetic resonance imaging (MRI).