3. Multifocal tumours - maximum of 3 total tumours with size >=2cm detected from CT-scan. Detection of <1cm tumour intra-operatively or upon histologic examination following resection can be ignored. For multiple satellite nodules (>=2cm) that are detected intraoperatively, harvest ALL satellite nodules (>/= 2cm). DNA/RNA will be extracted from cases confirmed to be HCC/hepato-cholangiocarcinoma by histology. A MAXIMUM of 3 samples with the best quality are to be used for the analysis.