CEREBRAL EMBOLISM FROM THE THROMBUS IN THE ATRIOVENTRICULAR SEPTAL ANEURYSM

Atriventricular septal aneurysm is a rare finding. Thrombus within the atrioventricular septal aneurysm has never been reported. Here, we re port a girl with sudden-onset hemiparesis. Magnetic resonance imaging of the patient's head revealed a lesion at the right basal ganglion. C erebral infarction was impressed. A series of examinations was perform ed to find the source of the cerebral embolism. Transthoracic echocard iography further showed a thrombus in the aneurysm. A subsequent opera tion revealed a fresh thrombus in the aneurysm. The presence of an ana tomic substrate such as this might justify anticoagulation treatment o r even surgical intervention before thromboembolism occurs.