Intravenous Leiomyomatosis with Intracardiac Extension as a Rare Cause of Abdominal Pain in an Adult Patient: A Case Report

Intravenous leiomyomatosis (ivl) is a rare and benign smooth muscle tumor that arises from intrauterine venules or the myometrium. we herein describe a 49-year-old woman with a history of myomectomy who developed abdominal pain. an intravascular mass with extension to the right atrium was detected in the inferior vena cava. the mass was surgically resected in a single stage under cardiopulmonary bypass. ivl features were indicated by subsequent histopathology. postoperatively, the patient was diagnosed with massive pericardial effusion and treated with a pericardial window. at 3 months’ outpatient clinical follow-up, she was asymptomatic. this case indicates that the diagnosis of ivl with extension to the heart should be kept in mind in patients presenting with abdominal pain.