12.5: End-of-Chapter Material Last updated Save as PDF Page ID 87855 Key takeaways for this Chapter Cancer starts with the change in one cell in the body. Cancer cells do not like each other and break off from the other cells to spread throughout the body, called Metastasis. A cancerous tumor is called malignant, a non-cancerous tumor is called benign. Cancer is the 2nd leading cause of death. Many cancers are asymptomatic. The acronym CAUTION is helpful for remembering some common cancer symptoms. Lifestyle choices can impact your risk of getting cancer. Media Attributions Diagram showing how cancer cells keep on reproducing to form a tumour © Cancer Research UK is licensed under a CC BY-SA (Attribution ShareAlike) license Diagram showing a tumour forcing its way through normal tissues © Cancer Research UK is licensed under a CC BY-SA (Attribution ShareAlike) license Tumor_Types_MTK © WolfpackBME is licensed under a CC BY-SA (Attribution ShareAlike) license How_metastasis_occurs_illustration © Unknown Illustrator is licensed under a Public Domain license Cancer_warning_signs © Linda Bartlett (Photographer) is licensed under a Public Domain license Melanoma_vs_normal_mole_ABCD_rule_NCI_Visuals_Online © Unknown creator; six images merged by User:Stevenfruitsmaak is licensed under a Public Domain license