CLINICAL MEDICINE

Detailed explanation-1: -Also called stage 0 disease. Carcinoma in situ (CIS) is a group of abnormal cells that are found only in the place where they first formed in the body (see left panel). These abnormal cells may become cancer and spread to nearby normal tissue (see right panel).

Detailed explanation-2: -Conclusion. Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

Detailed explanation-3: -Cancer cells can break away from tumors and spread to other parts of your body (metastasize). Labels for carcinoma describe how much it has spread. Carcinoma in situ: The carcinoma hasn’t spread. Invasive carcinoma: The carcinoma has spread to surrounding tissue close to where it formed.

Detailed explanation-4: -A condition in which abnormal cells are found in the tissues that form the surface of the skin, the lining of the hollow organs of the body (such as the bladder and uterus), and the lining of the respiratory and digestive tracts.