Surgery of pulmonary metastases

Area of Science:

• Thoracic Surgery
• Surgical Oncology
• Pulmonary Medicine

Background:

• Pulmonary resection is a treatment for metastatic lesions.
• Comparing outcomes before and after advances in chemotherapy is important.

Purpose of the Study:

• To compare the outcomes of pulmonary resection for metastatic lesions between two distinct time periods (1954-1975 vs. 1976-1985).
• To evaluate the evolving role of surgery in managing metastatic lung disease in the context of improved chemotherapy.

Main Methods:

• Retrospective analysis of 150 pulmonary resections for metastases in 80 patients (1954-1985).
• Comparison of outcomes between Group I (1954-1975, 35 patients) and Group II (1976-1985, 45 patients).
• Analysis of surgical mortality, survival rates, prognostic factors, and surgical procedures.

Main Results:

• Surgical mortality was low (1%).
• Actuarial 5-year survival significantly improved from 31% in Group I to 53% in Group II.
• Good prognostic factors included non-seminomatous testicular tumors, longer tumor-free intervals (>60 months), and longer tumor-doubling times (>136 days).
• Poorer outcomes were associated with N2 metastases and large tumor volume.

Conclusions:

• Pulmonary resection for metastatic lesions demonstrated improved survival in the later period (1976-1985), likely influenced by chemotherapy advancements.
• The role of surgery is expanding to include resection of chemotherapy-resistant or stabilized metastatic lesions for histological confirmation.