[Intentional limited resection for lung adenocarcinoma of 2 cm in size or less according to intraoperative frozen section and high-resolution computed tomography].

One hundred twenty-six cases of resected lung adenocarcinoma of 2 cm in size or less were studied about intra and postoperative Noguchi's classification, high-resolution computed tomography (HRCT) findings and lymph node metastases in cases of lobectomy. Intentional limited resection for lung adenocarcinoma of 2 cm in size or less was recommended for selected patients with tumors of type A of Noguchi's classification diagnosed by intraoperative frozen diagnosis or tumors of intraoperative type B of 0.5 in ground-glass opacity (GGO) diameter ratio or more of HRCT. These patients are almost equal to patients of 0.5 in GGO diameter ratio or more with any type of Noguchi's classification. This GGO diameter ratio of 0.5 is easily available as a criteria of intentional limited resection for lung adenocarcinoma of 2 cm in size or less.