Catheter-Directed Thrombolysis for Acute SVC Obstruction in a Patient with Metastatic Breast Cancer

External compression, thrombosis, or stenosis of the superior vena cava can lead to superior vena cava syndrome, a diagnosis that should be considered swiftly in patients presenting with classic symptoms such as facial and neck swelling, plethora, and distended neck veins.

We report a case of acute port-a-cath associated superior vena cava thrombosis in a longstanding, previously uncomplicated vascular access device in a patient with stable ER+/PR+/HER2+ metastatic breast cancer. After initial treatment, there was limited clinical improvement with subcutaneous low molecular weight heparin (LMWH). Following multidisciplinary team discussion, catheter-directed thrombolysis was performed, which resulted in complete symptom resolution.

The recognition of signs and symptoms is crucial in diagnosing acute superior vena cava syndrome, particularly in patients with a malignancy history or a central venous access device in situ. The thrombotic complications of port-a-cath symptoms can occur at any time and management should be guided by multidisciplinary discussion. In appropriately selected patients, catheter-directed thrombolysis can be successful and can lead to rapid symptom resolution.