Comparison of the epidermal growth factor receptor protein expression between primary non-small cell lung cancer and paired lymph node metastases: implications for targeted nuclide radiotherapy

Table 2 EGFR-scores for the analyzed primary Non-small cell Lung cancer and the corresponding lymph node metastases (n = 47).

Primary tumor EGFR-scores	Lymph node metastases EGFR-scores
	0	1+	2+	3+
0	8	2	1	0
1+	1	5	4	1
2+	0	1	9	0
3+	1	1	4	9

The scoring was based on a scale where 0 corresponded to completely negative staining, 1+ corresponded to faint perceptible staining of the tumor cell membranes, 2+ corresponded to moderate staining of the entire tumor cell membranes and 3+ was strong circumferential staining of the entire tumor cell membranes creating a fishnet pattern

ISSN: 1756-9966