Tissue microarray (TMA) is a high-throughput method of analysing large numbers of formalin-fixed, paraffin-embedded tumor at a minimal cost and effort. To analyse the expression of proteins of putative relevance to EGFR function, cell proliferation, angiogenesis, apoptosis, metastasis, and hormonal, TMA will be utilised. PTEN and C/EBPa will also be analysed.