ANATOMY

Detailed explanation-1: -People with cancer may have a higher risk of infection because of changes in the immune system that control their body’s defense systems. Cancer and cancer treatments can affect the immune system and other body systems in different ways.

Detailed explanation-2: -Researchers know that there are several viruses that can lead to cancer. For example, the human papillomavirus (HPV) can cause cervical and several other cancers. And hepatitis C can lead to liver cancer and non-Hodgkin’s lymphoma.

Detailed explanation-3: -A:True. Cancer results from the uncontrolled growth of abnormal cells anywhere in the body (blood, brain, bone, or any organ) and many of these abnormal cells are capable of invading other tissues. Cancers are often named for the organ or cell type where the abnormal cells first develop.

Detailed explanation-4: -Tumors can evade attacks from the immune system through various mechanisms such as restricting antigen recognition, inhibiting the immune system, and inducing T cell exhaustion.