Overview
Widespread metastatic malignant neoplastic disease involves the spread of cancer to multiple sites, often leading to significant pain, functional impairment, and complications such as fractures and neurological deficits. Management focuses on palliation, stabilization, and symptom control.Diagnosis
Clinical Presentation: Pain, neurological deficits, mechanical instability, and atypical symptoms like abdominal or thigh pain 4.
Imaging: MRI, CT, and bone scans to identify lesions and assess extent 16.
Cytology: Image-guided fine needle aspiration (FNA) with on-site evaluation by cytotechnologists or cytopathologists for adequacy 3.Management
Palliative Ablation Techniques:
- Cryoablation: Used for musculoskeletal metastases; caution with weight-bearing bones to avoid fractures 1.
- Coblation and Cementoplasty: Effective for painful vertebral body metastases, ensuring safe cement deposition 5.
Radiosurgery: Stereotactic radiosurgery (SRS) for precise treatment of craniovertebral junction metastases 2.
Surgical Interventions: Indicated for mechanical instability, neurological deficits, and spinal cord compression 6.
Pulmonary Metastectomy: Considered in selected cases based on specific algorithms and patient factors 7.Special Populations
Elderly: Increased risk of complications from interventions; careful consideration of patient frailty and life expectancy 16.
Comorbidities: Management tailored to coexisting conditions, emphasizing palliative care and symptom control 16.Key Recommendations
Early Involvement of Spinal Surgeons for patients with spinal metastases to manage instability and neurological deficits effectively (Evidence: Moderate 6).
Use of On-Site Cytology Evaluation for FNA procedures to ensure adequate samples in suspected metastatic disease (Evidence: Moderate 3).
Caution with Cryoablation in Weight-Bearing Bones to prevent fractures; consider alternative techniques if necessary (Evidence: Weak 1).
Consider Stereotactic Radiosurgery for precise treatment of craniovertebral junction metastases in patients unsuitable for surgery (Evidence: Moderate 2).
Evaluate Pulmonary Metastectomy Indications based on specific clinical algorithms, considering patient-specific factors (Evidence: Expert opinion 7).References
1 Prologo JD, Patel I, Buethe J, Bohnert N. Ablation zones and weight-bearing bones: points of caution for the palliative interventionalist. Journal of vascular and interventional radiology : JVIR 2014. link
2 Tuchman A, Yu C, Chang EL, Kim PE, Rusch MC, Apuzzo ML. Radiosurgery for metastatic disease at the craniocervical junction. World neurosurgery 2014. link
3 Olson MT, Novak A, Kirby J, Shahid H, Boonyaarunnate T, Ali SZ. Cytotechnologist-attended on-site evaluation of adequacy for metastatic disease involving bone and soft tissue. Acta cytologica 2013. link
4 Finucane L. Metastatic disease masquerading as mechanical low back pain; atypical symptoms which may raise suspicion. Manual therapy 2013. link
5 Prologo JD, Buethe J, Mortell K, Lee E, Patel I. Coblation for metastatic vertebral disease. Diagnostic and interventional radiology (Ankara, Turkey) 2013. link
6 Hatrick NC, Lucas JD, Timothy AR, Smith MA. The surgical treatment of metastatic disease of the spine. Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2000. link00199-7)
7 Todd TR. Pulmonary metastectomy. Current indications for removing lung metastases. Chest 1993. link