[Diagnosis and surgical treatment for small-sized peripheral lung cancer].

Small-sized peripheral lung cancers have been detected more frequently as a result of recent developments in diagnostic imaging including high-resolution computed tomography (HRCT). Although the diagnosis of small-sized peripheral lung cancers is difficult, it makes an adequate diagnosis possible using transbronchial fine needle aspiration cytology or a new thin-type bronchoscope. Surgical treatment using mini-thoracotomy or video-assisted thoracic surgery is effective for early stage small-sized peripheral lung cancers. Lesser resection of lung cancer may provide many benefits to patients, such as preserving vital lung tissue and providing the chance for further resection if a second primary lung cancer develops, however, lobectomy with systematic hilar and mediastinal lymph node dissection should remain the standard surgical treatment, and an intentional limited resection should be adopted for very limited patients with a definitive early stage because of recurrence rates.