What happens to DNA when it's cell is cancerous?

When a cell becomes cancerous, its DNA undergoes mutations that disrupt normal cell growth and regulation. These mutations can arise from various factors, including environmental influences, genetic predispositions, or errors during DNA replication. As a result, the cancerous cell may continue to divide uncontrollably, evading the body's mechanisms for apoptosis (programmed cell death) and leading to tumor formation. Ultimately, these changes contribute to the aggressive behavior of cancer cells and their ability to invade surrounding tissues.