Lung metastasectomy in patients with soft tissue sarcoma

Area of Science:

• Oncology
• Surgical Oncology
• Thoracic Surgery

Background:

• High-grade soft tissue sarcomas have a high rate (50-60%) of developing metastases.
• Lung metastases are the most common initial site of disease spread in soft tissue sarcoma patients.
• Pulmonary metastasectomy is a potential treatment for isolated lung metastases.

Purpose of the Study:

• To evaluate the effectiveness of pulmonary metastasectomy in patients with soft tissue sarcoma and lung metastases.
• To identify patient selection criteria that predict benefit from pulmonary metastasectomy.
• To compare survival outcomes between patients who underwent pulmonary metastasectomy and those who did not.

Main Methods:

• Retrospective review of medical records, radiology, and pathology for 189 soft tissue sarcoma patients with lung metastases.
• Analysis of 44 patients who underwent pulmonary metastasectomy versus 145 patients who did not.
• Multivariate analysis to identify factors influencing survival and disease control.

Main Results:

• Patients undergoing pulmonary metastasectomy had significantly better overall 5-year survival (70% vs. 19%) and survival post-metastasis diagnosis (52% vs. 7.5%).
• The strongest predictor of improved survival was the surgical resection of lung metastases itself (hazard ratio 0.2).
• Younger age (<40 years) and primary tumors in the lower limb were associated with reduced risk of death.

Conclusions:

• Pulmonary metastasectomy should be considered for selected soft tissue sarcoma patients with isolated lung metastases after primary tumor treatment.
• Patient selection based on age and primary tumor site may further optimize outcomes.
• Prospective data collection and randomized trials are needed to definitively clarify the role of pulmonary metastasectomy.