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). Specific hemagglutination tests for hydatid cyst were positive. The mass was excised, and the patient had a septoplasty operation to repair the remaining septal defect. He is currently being followed and reports no complaints. No evidence of arrhythmia was noted in 24-hour ambulatory ECG monitoring.