Immunohistological staining for EGFR showed localization of this molecule in all subcellular compartments, and this was true for both normal and adenoma tissue (Fig 3C, 3G, 3K, 3O and 3S) showing similar expression levels for membranous (mean expression 2.14±0.69 vs 2.19±0.89, p = 0.7, respectively, Fig 4A), cytoplasmic (mean expression 1.28±0.48 vs 1.69±0.73, p = 0.18, respectively, Fig 4B) and nuclear (0.85±0.37 vs 0.34±0.48, p = 0.1, respectively, Fig 4C) localization. Here, EGFR is linked to adenoma.