- Cancer Information
- Making a Diagnosis
Making a Diagnosis
Worries about Cancer
People worry about cancer for many different reasons. Perhaps someone close to you has been diagnosed, or you may have worries about cancer.
Urgent Cancer Pathway Referral team
What is cancer?
Our bodies are made up of tiny building blocks called cells. Inside every cell is a set of genes. Genes are the instructions the cell needs to work properly.
The instructions send signals to cells to grow and divide and make new cells. This is how our bodies grow and heal.
Sometimes genes in the cell can develop changes. If a gene is changed, it may not give the correct instructions anymore. A change in a gene is called a gene variant or mutation.
Gene variants in a cell may stop the cell working normally. Cancer may develop if cells like this multiply in an abnormal way and grow out of control. Over time, these cells can grow into a lump called a tumour.
This video helps you to understand what cancer is, how cancer starts and how the lymphatic system works.