False colour nuclear magnetic resonance (NMR) image of a coronal section of the abdomen of a person suffering from metastatic (secondary) cancer of the colon (the section of the large intestine from the caecum to the rectum). The site of the primary tumour in the colon appears as the isolated white area at bottom right. The cancer has spread (metastasised) to the liver, which appears massively enlarged at top & left; the white areas indicate metastases (secondary tumours) affecting the liver. The yellow region at right represents the remainder of the large intestine.