The prevalence of EGFR mutations were 7.5% (5 out of 67), one exon 19 deletion, one L858R (exon 21) mutation both in adenocarcinomas and three G719X mutations (exon 18) which were found in squamous cell carcinomas (SCC) and NSCLC NOS. This evidence concerns the gene EGFR and squamous cell carcinoma.