Figure 5
![Figure 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1756-0500-6-489/MediaObjects/13104_2013_Article_2547_Fig5_HTML.jpg)
Epidermal growth factor receptor mutation analysis by Sanger sequencing. A: Epidermal growth factor receptor wild type codon 862 (L862) in inguinal lymph node metastasis before starting crizotinib treatment B: Epidermal growth factor receptor mutation in codon 862 (c.2585 T > G; p.L862R) in newly appeared inguinal lymph nodal metastasis after 8 months of crizotinib treatment.