Lymph node evaluation achieved by open lobectomy compared with thoracoscopic lobectomy for N0 lung cancer

Area of Science:

• Thoracic Surgery
• Surgical Oncology
• Pulmonary Medicine

Background:

• Lymph node evaluation is critical in lung cancer staging and treatment planning.
• The completeness of lymph node dissection during video-assisted thoracic surgery (VATS) lobectomy remains a subject of debate.
• This study addresses the adequacy of lymph node assessment in VATS versus open thoracotomy lobectomy for clinical N0 lung cancer.

Purpose of the Study:

• To compare the extent of lymph node dissection between open thoracotomy and VATS lobectomy.
• To evaluate the impact of surgical approach on lymph node upstaging in clinical N0 lung cancer.
• To assess the oncologic outcomes, including survival, based on the surgical method.

Main Methods:

• Retrospective review of 129 patients with clinical N0 lung carcinoma undergoing lobectomy.
• Comparison of open thoracotomy (69 patients) and VATS lobectomy (60 patients) between December 2008 and January 2012.
• Analysis of patient demographics, tumor characteristics, number of dissected lymph nodes, pathologic staging, and survival data.

Main Results:

• The mean number of dissected lymph nodes was significantly higher in the open thoracotomy group (14.7) compared to the VATS group (9.9).
• A higher percentage of patients were upstaged to pathologic N1 or N2 in the open lobectomy group (24.6%) versus the VATS group (10%).
• Despite differences in lymph node yield and upstaging, 3-year survival rates were similar between the two surgical approaches.

Conclusions:

• Open lobectomy facilitates significantly more lymph node dissection than VATS lobectomy in patients with clinical stage N0 lung cancer.
• The findings raise concerns regarding the thoroughness of lymph node evaluation during VATS lobectomy.
• While 3-year survival was comparable, the reduced lymph node yield in VATS warrants further investigation into its long-term implications.