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Table 1 Characteristics of the tumor

From: Prescreening based on the presence of CT-scan abnormalities and biomarkers (KL-6 and SP-D) may reduce severe radiation pneumonitis after stereotactic radiotherapy

Subject N (%)
Biopsy proved primary lung cancer 60 51
cT1N0M0 39 33
cT2N0M0 19 16
the others 2 2
Unconfirmed histology (suspected of primary lung cancer) 14 12
Metastatic or recurrent lung cancer 43 37
Total 117 100