Early stage non-small cell lung cancer treated with pencil beam scanning particle therapy: retrospective analysis of early results on safety and efficacy

Table 1 Characteristics of patients

	Number of Patients
Age (year)	71 (50~80)
Gender
Male	20
Female	11
ECOG score
0/1	19/12
Pathology
SCC/Adno/ Unclassified/None	7/14/4/6
Primary tumor size, median (range)	3.1 (1.1~4.7) cm
Primary tumor volume, median (range)	19.39 (0.97~56.23) cm³
Stage (AJCC staging v7) I/IIa	21/10
T1aN0M0	4
T1bN0M0	7
T2aN0M0	10
T1aN1M0	1
T1bN1M0	4
T2aN1M0	5
Tumor location
Left/right lung	9/22
Upper/middle/lower lobe	19/2/10
Peripheral/median/central type-SPHIC institutional definition	3/15/13
Smoking history (packyears), median (range)	15 (0~150)
Refusal of surgery	8
Medically inoperable	23

Abbreviations: ECOG Eastern Cooperative Oncology Group, SCC Squamous cell carcinoma, Adno Adenocarcinoma, GTV Gross tumor volume, AJCC American Joint Committee on Cancer, SPHIC Shanghai Proton and Heavy Ion Center

ISSN: 1748-717X