Video: Lung Cancer – Raymond Casciari, MD

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Video Description:
Cancer is a deadly disease that has been spreading deaths across places. Lung Cancer is a cancer, which results from an abnormality in the body's basic unit of life, the cell. Normally, the body maintains a system of checks and balances on cell growth so that cells divide to produce new cells only when new cells are needed. Disruption of this system of checks and balances on cell growth results in an uncontrolled division and rapid growth of cells that eventually forms a mass known as a tumor. Tumors can be benign or malignant; benign means not spreading and malignant means cancer tumor that is spreading and will spread frequently.

When we speak of "cancer," we are referring to those tumors that are malignant. Benign tumors usually can be removed and do not spread to other parts of the body. Malignant tumors, on the other hand, grow aggressively and invade other tissues of the body, allowing entry of tumor cells into the bloodstream or lymphatic system and then to other sites in the body. This process of spread is called metastasis and the areas of tumor growth at these distant sites are called metastases. Since lung cancer tends to spread or metastasize very early after it forms, it is a very life-threatening cancer and one of the most difficult cancers to treat. While lung cancer can spread to any organ in the body, certain organs -- particularly the adrenal glands, liver, brain, and bone -- are the most common sites for lung cancer metastasis.

Lung cancers can arise in any part of the lung, but 90%-95% of cancers of the lung are thought to arise from the epithelial cells, which pretty much are the cells lining the larger and smaller airways (bronchi and bronchioles) and for this reason, lung cancers are sometimes called bronchogenic cancers or bronchogenic carcinomas. Carcinoma is the scientific term for cancer. Cancers also can arise from supporting tissues within the lungs, for example, the blood vessels. The blood vessels gather up cells and forms large tumors within the vessels causing shortness of passageways for cells to pass through. Lung cancer can be vicious if not treated properly.

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