What are the causes of Adeno Carcinoma of Lung?

March 11 22:15 2019 Print This Article

1.  It includes the most common cause of this disorder is a long term exposure to tobacco smoke. The occurrence of lung cancer among non smokers is 15 percent and is mainly liked with the genetic factors. Other factors can be radon gas, asbestos, air pollution including the second hand smoke. Smoking mainly in the form of cigarettes is the main contributor to cancer of lung. In the developed country most of the deaths occurs by smoking in relation to the lung cancer. In the United States smoking leads to most of the cases of lung cancer. In the case of males, the life time risk of developing lung cancer is 17 percent and in the females it is around 12 percent. In non smokers the risk is less it is 1.3 percent in the men and 1.4 percent in the women. A cigarette smoke has more than sixty carcinogens and they include the radion decay isotopes and nitrosamines.

2. Nicotine depresses the immune system and leads to the malignant out growths. The chance of lung cancer increases as the time of smoking increases. After the person stops smoking the chances of damage to the lung also decrease. The particles which lead to the damage also decrease and there is a evidence which shows that the chances of lung cancer or its prognosis is better in the non smokers as compared to the smokers. The patients who smoke at the time of diagnosis have less survival time than those who leave. In the case of passive smoking there is an inhalation of smoke from another smoker which is the cause of lung cancer in the person who do not smoke. It can be classified as someone living or working with the smokers.

There are studies in different countries which showed that there is an increase in the relative risk among the people who are passive smokers. There was an investigation of the side stream smoke which suggested that it is more dangerous than the direct smoke inhalation. 10 to 15 percent of the cancer patients have never smoked. It means around 20 to 30 thousand never smokers have diagnosis of lung cancer in the United States each year as the survival rate is 5 years. Each year in the America more never smokers die of lung cancer than the patients of leukemia, ovarian cancer or AIDS.

3. A colorless and odorless gas is generated by the breakdown of radioactive radium which is a decay product of uranium which occurs in the earth crust. It is known as the radon. It has the ability to ionize the genetic material which may lead to the mutations that can be cancerous. It is one of the common causes of lung cancer followed by smoking. Its level is not constant and it depends on the composition of rocks and soils. It is quite common in the corn wall area in UK and in these areas the buildings must be ventilated force fully with the help of fans so to lower the radon gas. There is a United States environmental protection agency which is referred as the EPA. It is estimated that the one in 15 homes in the United States have high radon levels which is above the level of 4 pico curies per litres. Iowa has the highest concentration of radon in the United States. The studies which have been done there have shown that there has been an increase in the lung cancer by 50 percent with a radon exposure more than the environmental protection agency which is referred as the EPA above the level of 4 pico curies per litres.

4. The lung diseases can also be caused by the asbestos. It may lead to the lung cancer. One can observe a synergetic effect between the asbestos and tobacco smoking which may lead to the lung cancer. In the UK, asbestos may lead to 2 to 3 percent of the male lung cancer problems. It can also lead to the cancer of pleura which is referred as the mesothelioma which is not like a lung cancer.

5. Viruses can also lead to the lung cancer it may occur in the animals as well as in humans. The virus includes the human papilloma virus which is referred as the HPV, cyto megalo virus which is referred as the CMV, simian virus which is referred as the SV 40, BK virus respectively. They affect the division of cell leading to uncontrolled growth.

6. There are studies which were done in the America and have showed that the link has been established between the particulate matter and lung cancer. If the concentration of particles in the air increases by 1 percent the risk of developing a lung cancer increases by 14 percent. It also has been stated that the particle size matters which are ultra fine and have the ability to penetrate further in the lungs.

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