NEET BIOLOGY

Detailed explanation-1: -Cancer cells can break away from the original tumor and travel through the blood or lymph system to distant locations in the body, where they exit the vessels to form additional tumors. This is called metastasis. Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues.

Detailed explanation-2: -When cancer spreads, it’s called metastasis. In metastasis, cancer cells break away from where they first formed, travel through the blood or lymph system, and form new tumors in other parts of the body. Cancer can spread to almost anywhere in the body. But it commonly moves into your bones, liver, or lungs.

Detailed explanation-3: -General Definition of Cancer The American Cancer Society (ACS) defines cancer as a group of diseases characterized by uncontrolled growth and spread of abnormal cells. If the spread is not controlled, it can result in death. A cancer cell is a cell that grows out of control.

Detailed explanation-4: -Cancerous clumps of cells can also spread to other parts of the body, thereby causing blockages and upsetting the chemical balances in the body. There are two predominant types of lung cancer: small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC). Carcinoid is a third, rare type of lung cancer.

Detailed explanation-5: -Lung cancer is a disease in which certain cells in the lungs become abnormal and multiply uncontrollably to form a tumor . Lung cancer may not cause signs or symptoms in its early stages.