Table 1.

Characteristics of the 177 primary lung cancer patients and the tumors

	Lung cancer patients (n = 177)
Mean age (range)	77.3 ± 7.0 (55–92)
Gender (male: female)	132:45
Pathology of the tumor (Ad: SCLC: SCC:spindle cell carcinoma*: unspecified**:unknown***)	89:7:47:1:9:24
Tumor diameter (average ± standard deviation)	8–55 mm(30.0 ± 9.1)
Tumor-chest wall distance (median)	0–53 mm(6)
**Range of follow-up period (median)	6–95 months (23)
Method of radiotherapy (48 Gy/4fr:60Gr/10fr:70Gr/10fr)	95:45:37
BED10 of the isocenter (median)	96–119 Gy (105.6)

Abbreviations: Ad = adenocarcinoma, SCLC = small cell lung cancer, SCC = squamous cell carcinoma, BED = biologically effective dose.

*Suspicious of pleomorphic carcinoma, but a definitive diagnosis was not made because of needle biopsy.

**“unspecified” indicates pathologically definitive non-small cell lung carcinoma, but unspecified for the subtype.

***“unknown” indicates clinically highly suspicious for lung cancer but no pathology obtained.