Femoral Vein Intravascular Synovial Sarcoma Mimicking Primary Deep Vein Thrombosis—A Rare Cause of Deep Vein Thrombosis

Abstract

Synovial sarcomas are rare malignant mesenchymal soft tissue tumors. We presented the case of a 53-year-old woman patient presenting with acute deep vein thrombosis, later diagnosed as a deep synovial sarcoma of the femoral vein wall. The tumor was identified through cross-sectional magnetic resonance angiography and computed tomography, followed by ultrasound-guided core biopsy. The case report emphasized the importance of considering the possibility of an intravascular neoplasm mimicking thrombus, particularly if calcifications, vein expansion with intravascular cystic spaces, fluid–fluid levels, and septations within a thrombosed vein are seen in imaging.

Keywords

• deep vein thrombosis
• femoral vein malignancy
• intravascular synovial sarcoma
• intravascular tumors
• synovial sarcoma