Giant left atrial calcified myxoma-induced premature atrial contractions

A 73-year-old woman with palpitations for 3  months was referred for a diastolic murmur and frequent premature atrial contractions (PACs) (21,544 PACs/day). During the PACs, the P-wave morphology was negative/positive in lead V1 and positive in lead aVL (Panel A), suggesting their origin in the septal left atrium (LA). Transthoracic echocardiography showed a mass in the LA; cardiac computed tomography demonstrated a giant calcified mass with a stalk to the LA septum (Panel B). After surgical resection of the mass, histopathology confirmed a rare calcified myxoma, and the PACs were disappeared. At 18 months of follow-up, the patient was free of any atrial arrhythmias.
Source: Europace - Category: Cardiology Source Type: research