The Frequency of Epidermal Growth Factor Receptor Mutation of Nonsmall Cell Lung Cancer according to the Underlying Pulmonary Diseases

Table 1

Patient characteristics NSCLC: nonsmall cell lung cancer: LCNEC; large cell neuroendocrine carcinoma.

Total number of patients	198
Age (median, range)	68, 28–92
Gender
Female	86
Male	112
Smoking-status
Never	74
Ex/Current	124
Histology
Adenocarcinoma	169
Squamous cell carcinoma	9
Other NSCLC	15
LCNEC	4
Clinical stage of NSCLC
IA	29
IB	14
IIA	2
IIB	6
IIIA	12
IIIB	30
IV	105
Chest CT
Normal	122
Emphysema	59
Fibrosis	17
EGFR mutation
Wild type	147
Ex18 G718S	1
Ex19 del	34
Ex21 L858R	15
EX19 del + Ex21 L858R	1
Ex 19del + T790M	1