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Sublobar resection for lung cancer

¹ Thoracic Surgery Service, Hospital Mutua de Terrassa, University of Barcelona, Terrassa, Barcelona, Spain, ² Dept of Thoracic Surgery, Tokyo Medical University, Tokyo, Japan.

CORRESPONDENCE: R. Rami-Porta, Thoracic Surgery Service, Hospital Mutua de Terrassa, Plaza Dr. Robert 5, 08221 Terrassa, Barcelona, Spain. Fax: 34 937365059. E-mail: rramip{at}terra.es

Keywords: Bronchioloalveolar carcinoma, lobectomy, nonsmall cell lung cancer, segmentectomy, sublobar resection, wedge resection

Received: July 2, 2008
Accepted August 1, 2008

Sublobar resection for small lung cancers has been debated frequently and is still a controversial issue. The only randomised trial comparing lobectomy with sublobar resections found a significantly higher recurrence rate for the latter, but failed to show significant differences in survival, although survival was better for the lobectomy group. One meta-analysis and several nonrandomised comparisons have confirmed these results. In general, lobectomy and sublobar resections have similar 5-yr survival rates. Local recurrence after wedge resection is higher than after segmentectomy. However, for patients aged >71 yrs, lobectomy and wedge resection are associated with similar survival. For tumours of 2 cm, segmentectomy is equivalent to lobectomy, but survival after segmentectomy is worse if performed for larger tumours. For both segmentectomy and wedge resection, tumour margins should be 1 cm wide to avoid recurrence. For pure bronchioloalveolar carcinoma of 2 cm, diagnosed intraoperatively with certainty, sublobar resection seems equivalent to lobectomy, and because there is no nodal involvement, systematic nodal dissection may not be necessary. In case of doubt, however, lobectomy with systematic nodal dissection will ensure complete resection and adequate staging. More randomised trials are needed to confirm all these issues.