Cancer is a collection of diseases that occur when 'affected' cells in the body grow and multiply. The body has mechanisms to check and trigger 'cell death' is a primary cause of cancer
Cancer occurs when cells grow and multiply abnormally, instead of dying (Apoptosis) and being replaced by new cells.
Cancerous cells can invade nearby tissues and spread to other parts of the body through the blood and lymph systems. This process is called metastasis and is a leading cause of cancer deaths. Lymph nodes are small organs that are part of the immune system, and filter out harmful substances.
