Impact of Cytological Sampling on EGFR Mutation Testing in Stage III-IV Lung Adenocarcinoma

Table 2

Source of sample for diagnosis.

		Sent for EGFR mutation testing		Successful mutation analysis
			%		%
Histological	45	37	82	30	81
CT guided lung biopsy	17	14	82	11	79
Bronchoscopic biopsy	12	9	75	8	89
CT guided bone biopsy	3	3	100	3	100
Wedge resection	2	2	100	0	0
Excision biopsy neck node	2	2	100	2	100
Biopsy of metastasis	2	2	100	2	100
Lobectomy	1	1	100	1	100
VATS biopsy lung	1	0	0	0	0
Core biopsy node	1	1	100	1	100
Bone biopsy	3	2	67	1	33
Endoscopic biopsy of oesophagus	1	1	100	1	100
Cytological	25	22	88	20	91
Pleural fluid	11	10	91	9	90
EBUS TBNA node	9	8	89	8	100
Bronchial washings	2	1	50	0	0
CT guided FNA lung	1	1	100	1	100
EUS FNA node	1	1	100	1	100
FNA node	1	1	100	1	100