Lungs are the vital respiratory organs in the human body. The two lungs are located near the backbone on either side of the heart. The main function of Lungs is to carry oxygen from the atmosphere into the blood, and to release carbon dioxide from the blood into the atmosphere.
A Lung Cancer is when out-of-control cell growth occurs in one or both lungs. The cancer can arise in any part of the lung, but majority of it arises in the epithelial cells, which are the lining of the Bronchi and bronchioles i.e. the larger and the smaller airways of the lungs. Lung cancer is predominantly a disease of the elderly almost 70% of people diagnosed with lung cancer are over 65 years of age.
Lung Cancer is largely classified into two main types based on the cancer’s appearance under a microscope viz. Small Cell Carcinoma which accounts for only 20% of the total lung cancer’s and Non small Cell Lung Cancer (NSCLC) which accounts for 80% of lung cancers.
The major causes of Lung cancer are as follows:
Lung cancer symptoms usually appear after the disease reaches an advanced stage. These include:
Lung cancer can be diagnosed by:
Lung cancer treatments depend on the category and stage of the cancer. And the other factors that are considered while selecting a treatment are age, health condition, and additional personal characteristics. Usually a combination of therapies and palliative care is given as part of the treatment. The main lung cancer treatments are surgery, chemotherapy, and/or radiation.Surgery: If the cancer is in initial stages and the tumor has not spread than surgery is done by removing the tumor and the surrounding margin of tissue. If the disease has spread, it is not possible to remove all the cancer cells through surgery.Radiotherapy: Through radiation the lung cancer tumors are destroyed or shrunken by focusing high-energy rays on these cells. Radiation can be used as the main treatment for lung cancer or can also be used along with surgery to kill the remaining.
Chemotherapy: In Chemotherapy strong chemicals are used which hinders the cell division process.Interventional Radiology: In this small heat probes are inserted into the tumor which kills the tumor cells.
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