Inflammatory Myofibroblastic Tumor of the Right Atrium in an Infant

Abstract

Cardiac inflammatory myofibroblastic tumors are very rare, and the clinical features are not well understood. We present the case of a 3-month-old girl with a confirmed pathological diagnosis of cardiac inflammatory myofibroblastic tumor. She was initially brought to hospital due to vomiting. She exhibited elevated serum IL-6 levels and other clinical symptoms suggestive of myxoma. Echocardiogram confirmed the presence of a large tumor of the right atrium and abundant pericardial effusion. We were concerned about the possibility of cardiac tamponade and considered the case to be urgent; we therefore recommended surgical removal of the tumor. This patient is also at risk for malignant transformation or recurrence of the cardiac inflammatory myofibroblastic tumor and needs a long-term follow-up.