Case report: intravenous leiomyomatosis with intracaval and intracardiac growth

• Type of Material: Article
• Authors: Daniel S. Kikuchi, Johns Hopkins Hospital; Clive A. Goulbourne, Emory University; Kristen Starbuck, Emory University; Marcelo F. Fernandes, Emory University
• Language: English
• Date: 2023-01-01
• Publisher: European Society of Cardiology
• Publication Version: Final Published Version
• Copyright Statement: © The Author(s) 2022. Published by Oxford University Press on behalf of the European Society of Cardiology.
• License: Creative Commons Attribution-NonCommercial 4.0 International
• Final Published Version (URL): http://dx.doi.org/10.1093/ehjcr/ytac464
• Title of Journal or Parent Work: European Heart Journal - Case Reports
• Volume: 7
• Issue: 1
• Start Page: ytac464
• End Page: ytac464
• Grant/Funding Information: None declared.
• Keywords: Cardiac tumour; IVL; Case report; Intravenous leiomyomatosis; Intracaval tumour
• Research Categories: Health Sciences, Medicine and Surgery; Health Sciences, Oncology

Abstract

Background: Intravenous leiomyomatosis (IVL) is a rare, benign smooth muscle cell tumour that extends beyond the pelvis. These tumours grow within vascular channels and can progress to involve the heart and pulmonary vasculature. Case Summary: A 44-year-old female initially presented to her primary care physician for subacute bloating. In the weeks leading up to her presentation, she was in good health. On admission, computed tomography (CT) imaging of the abdomen and pelvis was notable for a mixed solid and cystic mass arising from the fundal myometrium with invasion into the inferior vena cava (IVC). Transthoracic echocardiogram (TTE) was notable for mobile mass in the right atrium originating from the IVC. The mass was further evaluated by cardiac magnetic resonance (CMR) imaging before a multidisciplinary, single-staged thoracoabdominal resection was performed. The procedure was well tolerated, and the entire mass was successfully removed without complication. Subsequently, pathological analysis of the resected tumour revealed benign smooth muscle cells, confirming the diagnosis of IVL. Discussion: Intravenous leiomyomatosis is a rare cause of right-sided cardiac tumours but should be considered in premenopausal females, even those with a prior history of hysterectomy. The clinical presentation of patients with IVL is varied and imaging including CMR, CT, and TTE to evaluate the tissue characteristics and source of the cardiac mass should be performed. Finally, while imaging revealing a freely mobile pelvic mass extending into the IVC and right heart chambers is strongly suggestive of IVL, definitive diagnosis requires pathological analysis of resected tissue.