General Knack of Segmentectomy

For segmentectomy, preoperative pathologic diagnosis is necessary. If the tumor is pathologically diagnosed by wedge resection, a precise segmentectomy becomes hard due to staple line. Needle aspiration biopsy under CT is useful before segmentectomy, especially for a small tumor deeply located or ground-glass attenuation (GGA) tumor (Figs. 4.1 and 4.2) [1, 2]. Bronchoscopic biopsy sometimes results in false negative for these tumors. When the tumor can be seen or palpated during surgery, intraoperative needle aspiration is also useful.