Lung cancer is the uncontrolled growth of abnormal cells in one or both lungs. These abnormal cells do not carry out the functions of normal lung cells and do not develop into healthy lung tissue. As they grow, the abnormal cells can form tumors and interfere with the functioning of the lung, which provides oxygen to the body via the blood.
Lung cancer is the number one cause of cancer deaths in the both men and women worldwide. Lung cancer has surpassed breast cancer as the most common cause of cancer related deaths in women. Cigarette smoking is the primary risk factor for development of lung cancer. Passive exposure to tobacco smoke can also cause lung cancer. Statistics from the ...view middle of the document...
They are Adenocarcinoma, Squamous cell carcinoma (which is also called epidermoid carcinoma) and Large cell carcinoma. Adenocarcinoma is the most common form of lung cancer among men and women. Squamous cell carcinoma or epidermoid carcinoma forms in the lining of the bronchial tubes. Lastly, Large cell carcinomas refer to non-small cell lung cancers that are neither adenocarcinomas nor epidermoid cancers. There is a third type of lung cancer which is not nearly as strong as NSCLC or SCLC. This third type is lung carcinoid tumors. Fewer than five percent of lung cancers are lung carcinoid tumors. They are sometimes called lung neuroendocrine tumors. Most of these tumors grow slowly and rarely spread.
Small cell lung cancer accounts for the remaining 15 percent of lung cancers. Small cell lung cancer results from smoking even more so than non-small cell lung cancer, and grows more rapidly and spreads to other parts of the body earlier than non-small call lung cancer. It is also more responsive to chemotherapy.
The staging of lung cancer refers to the extent in which the cancer has spread in the body. The stages of non-small cell lung cancer include; stage I which means the cancer is located only in the lungs and has not spread to any lymph nodes, stage II which means the cancer is in the lung and nearby lymph nodes, stage III which is where the cancer is found in the lung and in the lymph nodes in the middle of the chest, also known as locally advanced disease. Stage III has two subtypes which are, if the cancer has spread only to lymph nodes on the same side of the Funderburk 3
chest where the cancer started, it is called stage IIIA, and if the cancer has spread to the lymph nodes on the opposite side of the chest, or above the collar bone, it is called stage IIIB. Stage IV is the most advanced stage of lung cancer, and is described as advanced disease. This is when the cancer has spread into both lungs, to fluid in the area around the lungs, or to another part of the body, such as the liver or other organs.
Stages of small cell lung cancer include; limited stage which is where cancer is found on one side of the chest, involving just one part of the lung and nearby lymph nodes, and extensive stage is where cancer has spread to other regions of the chest or other parts of the body.
Treatment of lung cancer can involve a combination of surgery, chemotherapy, and radiation therapy as...