Extended resection: is it feasible for pulmonary metastases?

Area of Science:

• Thoracic Surgery
• Surgical Oncology
• Pulmonary Medicine

Background:

• Secondary pulmonary malignancies often require extended resections to achieve tumor-free surgical margins.
• Analyzing outcomes of extended resections for pulmonary metastases is crucial for treatment planning.

Purpose of the Study:

• To analyze the outcomes of extended resections in patients undergoing pulmonary metastasectomy.
• To compare the results of extended resections with standard lobar or sublobar resections.

Main Methods:

• A retrospective analysis of 25 extended pulmonary resections (including chest wall, diaphragm, vascular, sleeve, pneumonectomy, atrial, and completion pneumonectomies) performed between 1991 and 2008.
• Comparison of disease-free interval, resection type, operative morbidity, mortality, and survival between extended resection and lobar/sublobar resection groups.

Main Results:

• Extended resections constituted 10% of 319 metastasectomy procedures in 250 patients.
• Actuarial 5-year survival for extended metastasectomy was 16.3%; mean survival was 40 months, not significantly different from lobar/sublobar resections (20 months, P=0.09).
• No 30-day mortality observed; survival differences were not statistically significant in subgroup analyses for osteosarcoma and epithelial tumors.

Conclusions:

• Extended resections during pulmonary metastasectomy can achieve tumor-free borders and may offer curative potential.
• These complex procedures are associated with low rates of mortality and morbidity in carefully selected patients.