Adenocarcinoma of the lung risk factors

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Shanshan Cen, M.D. [2]

Overview

Common risk factors in the development of adenocarcinoma of the lung are smoking, family history of lung cancer, high levels of air pollution, radiation therapy to the chest, radon gas, asbestos, occupational exposure to chemical carcinogens, and previous lung disease.

There are no established risk factors for [disease name].

OR

The most potent risk factor in the development of [disease name] is [risk factor 1]. Other risk factors include [risk factor 2], [risk factor 3], and [risk factor 4].

OR

Common risk factors in the development of [disease name] include [risk factor 1], [risk factor 2], [risk factor 3], and [risk factor 4].

OR

Common risk factors in the development of [disease name] may be occupational, environmental, genetic, and viral.

Risk Factors

  • Common risk factors in the development of adenocarcinoma of the lung include smoking, family history of lung cancer, radiation therapy to the chest and asbestos exposure.

Common Risk Factors

  • Common risk factors in the development of adenocarcinoma of the lung may be occupational, environmental, or constitutional.
  • Common risk factors in the development of adenocarcinoma of the lung include:[1]

Smoking

  • Cigarette smoking is the leading cause of lung cancer.
  • Both active and passive smoking are associated with increased risk of lung cancer.
  • The risk of lung cancer is associated with increased quantity as well as increased duration of smoking.
  • There is no evidence to suggest that smoking low-tar cigarettes lowers the risk.
  • Recently introduced e-cigarrettes, which were thought to be risk-free were recently demonstrated to be also associated with a significantly increased risk of lung cancer due to the presence of formaldehyde.[6]
  • Smoking accounts for 87% of lung cancer cases in the US. The lag period between smoking and death due to lung cancer is 20 years.[7]

Second-hand smoke

  • Second-hand smoke is exhaled by smokers. It is also known as involuntary, passive smoking or environmental tobacco smoke (ETS).[8]
  • Second-hand smoke contains the same chemicals as smoke that is actively inhaled.
  • People exposed to second-hand smoke have an increased risk of lung cancer.
  • Second-hand smoke is a main risk factor for lung cancer among non-smokers. No amount of exposure to second-hand smoke is safe.[9]

Air Pollution

  • Emissions from automobiles, factories and power plants are thought to pose potential risks.[10]
  • Researchers have shown that individual components of outdoor air pollution cause cancer. These components include diesel engine exhaust, benzene, particulate matter and some polycyclic aromatic hydrocarbons (PAHs).[11]

Family History of Lung Cancer[12]

  • Family history of lung cancer may increase the risk of lung cancer.
  • First-degree relatives of people who have had lung cancer may have a slightly higher risk of developing lung cancer themselves. The increased risk among first-degree relatives could be due to a number of factors, such as shared behaviours or living in the same place where there are carcinogens.
  • Studies of families with a strong history of lung cancer have found that the increased risk might be due to a mutation in a lung cancer gene. Other studies have shown that the risk of lung cancer in a family increases if a family member developed the disease at an early age.

Radiation Therapy to the Chest

  • A history of radiation therapy to the chest increases the risk of lung cancer due to the development of cellular damage and DNA mutations.
  • The risk of lung cancer increases for people who have had previous exposure to ionizing radiation.
  • People who have been treated with radiation therapy to the chest for cancers such as Hodgkin lymphoma or breast cancer are at increased risk for lung cancer. The risk is further increased in people who smoke.

Radon Exposure

  • Radon is a colourless, odourless, tasteless gas that comes from the natural breakdown of uranium in rocks and soil. In the outdoors, radon gas is diluted by fresh air, so it is not usually a concern. But radon can seep into a home or building through dirt floors or cracks in basement foundations. It may reach unsafe levels in enclosed, poorly ventilated homes or buildings because of seepage into the basement. Breathing in radon gas can damage cells that line the lungs.
  • Radon exposure increases the risk of lung cancer. Radon is the leading cause of lung cancer in non-smokers and the second leading cause of lung cancer in smokers.
  • The risk of developing lung cancer depends on how much radon a person is exposed to, how long they are exposed as well as whether or not they smoke. The risk from radon is much higher in people who smoke than in those who don't.

Asbestos Exposure[13]

  • Asbestos is group of minerals that occur naturally. Asbestos has been widely used in building materials and many industries. Exposure to asbestos fibres in the air that people breathe increases the risk of lung cancer.
  • The risk of asbestos exposure is highest for people who work with asbestos, such as miners or those who work with it in manufacturing.
  • Studies have shown that the combination of smoking and asbestos exposure is especially hazardous. People who are exposed to asbestos and also smoke are at even greater risk of developing lung cancer.

Exposure to Other Chemical Carcinogens[14]

  • Arsenic and inorganic arsenic compounds
  • Beryllium and beryllium compounds
  • Cadmium and cadmium compounds
  • Chemicals used in rubber manufacturing, iron and steel founding and painting
  • Chloromethyl ethers and bischloromethylether
  • Chromium (VI) compounds
  • Cobalt-tungsten carbide
  • Diesel engine exhaust
  • Mustard gas
  • Polycyclic aromatic hydrocarbons (PAHs)
  • Radioactive ores such as uranium and plutonium
  • Silica dust and crystalline silica
  • Some nickel compounds

Less Common Risk Factors

  • Less common risk factors in the development of adenocarcinoma of the lung include:[15]
    • Marijuana use
    • Indoor burning of wood
    • High-temperature frying
    • Meat diet
    • Physical inactivity
    • Occupational exposure to certain chemicals
    • Occupational exposure to vinyl chloride, dioxin, cobalt-tungsten carbide, or strong inorganic acid mists
    • Removal of both ovaries

References

  1. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  2. CDC (Dec 1986). "1986 Surgeon General's report: the health consequences of involuntary smoking". CDC. PMID 3097495. Retrieved 2007-08-10.
    * National Research Council (1986). Environmental tobacco smoke: measuring exposures and assessing health effects. National Academy Press. ISBN 0-309-07456-8.
    * Template:Cite paper
    * California Environmental Protection Agency (1997). "Health effects of exposure to environmental tobacco smoke". Tobacco Control. 6 (4): 346–353. PMID 9583639. Retrieved 2007-08-10.
    * CDC (Dec 2001). "State-specific prevalence of current cigarette smoking among adults, and policies and attitudes about secondhand smoke—United States, 2000". Morbidity and Mortality Weekly Report. CDC. 50 (49): 1101–1106. PMID 11794619. Retrieved 2007-08-10.
    * Alberg, AJ (Jan 2003). "Epidemiology of lung cancer". Chest. American College of Chest Physicians. 123 (S1): 21S–49S. PMID 12527563. Retrieved 2007-08-10. Unknown parameter |coauthors= ignored (help)
  3. Boffetta, P (Oct 1998). "Multicenter case-control study of exposure to environmental tobacco smoke and lung cancer in Europe". Journal of the National Cancer Institute. Oxford University Press. 90 (19): 1440–1450. PMID 9776409. Retrieved 2007-08-10. Unknown parameter |coauthors= ignored (help)
  4. "Report of the Scientific Committee on Tobacco and Health". Department of Health. Mar 1998. Retrieved 2007-07-09.
    * Hackshaw, AK (Jun 1998). "Lung cancer and passive smoking". Statistical Methods in Medical Research. 7 (2): 119–136. PMID 9654638.
  5. Template:Cite paper
  6. Jensen RP, Luo W, Pankow JF, Strongin RM, Peyton DH (2015). "Hidden formaldehyde in e-cigarette aerosols". N Engl J Med. 372 (4): 392–4. doi:10.1056/NEJMc1413069. PMID 25607446.
  7. Samet, JM (May 1988). "Cigarette smoking and lung cancer in New Mexico". American Review of Respiratory Disease. 137 (5): 1110–1113. PMID 3264122. Unknown parameter |coauthors= ignored (help)
  8. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  9. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  10. Parent, ME (Jan 2007). "Exposure to diesel and gasoline engine emissions and the risk of lung cancer". American Journal of Epidemiology. 165 (1): 53–62. PMID 17062632. Unknown parameter |coauthors= ignored (help)
  11. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  12. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  13. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  14. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution
  15. Lung cancer. Canadian Cancer Society 2015. http://www.cancer.ca/en/cancer-information/cancer-type/lung/risks/?region=ab#Outdoor_air_pollution


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