[Lung Excision for Clinical Stage I Lung Cancer]

A strategy of indicating lung excision for high risk patients is discussed based on reviewing of treatments for clinical stage I lung cancer. According to clinical studies of lung excision or stereotactic body radiation therapy both results may be similar, while a multicenter randomized prospective study is on-going. Since the result of lung excision may be revealed to depend on tumor size, tumor location in the lung, distance from surgical margin to tumor, tumor size-margin distance ratio and margin cytology results, a prospective study is recommended, which will be able to assessed clinical implications of such factors to extract patients having good prognoses.