Book excerpt: The minimum standard surgical resection required for curative surgical management of carcinoma of lung had been lobectomy, established based on The Lung Cancer Study Group results, published decades earlier. Recent data show similar oncological outcomes for patients undergoing lobar and sublobar resection with proper patient selection. Randomized trials are underway to statistically establish their equivalence. Segmentectomy is a demanding procedure requiring an in-depth understanding of surgical anatomy and its variations and surgical expertise. Many techniques are described, by various specialists, to perform segmental resection, with their own advantages and shortcomings.