Embolization of tumor vasculature

Embolization of tumor vascular supply is a minimally invasive procedure aimed at blocking the blood flow to a tumor in order to reduce its size, facilitate surgical resection, or control tumor growth. The procedure may be used as an independent treatment method or as a preoperative preparatory step.

Goals of embolization

1. Reduction of tumor blood supply. Limiting tumor growth by depriving it of nutrients and oxygen.
2. Decreased intraoperative blood loss. Lowering the volume of blood supplied to the tumor during surgery.
3. Symptom control. Reduction of pain, edema, and other tumor-related manifestations.
4. Preoperative preparation. Tumor size reduction to simplify surgical removal.
5. Palliative treatment. Slowing tumor progression when radical resection is not feasible.

Indications for embolization in neurosurgery

1. Head and neck tumors. Glomus tumors, meningiomas, angiofibromas.
2. Spinal and pelvic tumors. Primary or metastatic lesions causing compression or pain.
3. Vascular tumors. Hemangiomas and other highly vascular neoplasms.

Contraindications

1. General contraindications. Severe coagulation disorders, active infectious diseases, intolerance to contrast agents.
2. Specific contraindications. Lack of safe vascular access to the tumor, high risk of damage to healthy tissues.

Pre-procedural preparation

1. Diagnostic imaging. Contrast-enhanced CT or MRI, angiography, biochemical blood tests.
2. Medication management. Adjustment of anticoagulant and antiplatelet therapy when necessary.
3. Patient counseling. Detailed discussion of the procedure, expected outcomes, and potential risks.

Procedure steps

1. Anesthesia. Usually local anesthesia with conscious sedation.
2. Vascular access. A catheter is introduced through a puncture of the femoral or radial artery.
3. Angiography. Injection of contrast medium to visualize the tumor’s vascular network.
4. Delivery of embolic material. Specialized embolic agents are introduced into the vessels supplying the tumor to block blood flow.
5. Control stage. Repeat angiography to confirm successful vascular occlusion.
6. Completion of the procedure. Catheter removal and application of a compression dressing.

Post-procedural period

1. Observation. In-hospital monitoring for 1–2 days with assessment of pain and general condition.
2. Medication therapy. Analgesics for pain control and antibiotics for infection prevention when indicated.
3. Imaging follow-up. Repeat CT or MRI after 1–3 months to evaluate treatment effectiveness.
4. Restrictions. Avoidance of physical exertion for 1–2 weeks.

Advantages of embolization

1. Minimally invasive technique. Minimal tissue trauma.
2. Rapid recovery. Short hospitalization and rehabilitation period.
3. High effectiveness. Significant reduction of tumor blood supply and size.
4. Reduced bleeding risk. Particularly important prior to surgical tumor resection.
5. Compatibility with combined therapy. Can be integrated with radiotherapy or chemotherapy.

Embolization of tumor vascular networks in Belarus is a modern and effective treatment method that improves prognosis for patients with various neoplasms. Due to its minimal invasiveness and high precision, the procedure is widely used both as a standalone therapy and as an adjunct to surgical or oncological treatment. Timely embolization can significantly improve quality of life and increase the likelihood of successful outcomes.