From: Epidermal Growth Factor Receptor and K-RAS status in two cohorts of squamous cell carcinomas
 | Anal Canal (n = 51) | Tonsils (n = 24) |
---|---|---|
Age (years) | Â | Â |
   Median | 60 | 58 |
   Range | 35-85 | 43-80 |
Gender (number) | Â | Â |
   Male | 25 | 18 |
   Female | 26 | 6 |
Specimens (number) | Â | Â |
   Biopsies | 15 | 2 |
   Resection | 36 | 22 |
Histological findings (number) | Â | Â |
   Well differentiated SCC | 17 | 5 |
   Moderately differentiated SCC | 20 | 13 |
   Poorly differentiated SCC | 14 | 6 |
Evaluable cases (number) for | Â | Â |
   EGFR immunostaining | 43 | 24 |
   EGFR FISH | 23 | 24 |
   EGFR mutation analysis |  |  |
exon18 | 26 | 22 |
exon19 | 30 | 24 |
exon20 | 34 | 24 |
exon21 | 30 | 24 |
   K-RAS mutation analysis | 30 | 22 |