Lung Cancer is one of the most leading cancer killers in both men and women in India. Lung Cancer happens when the cells in the lungs begin to mutate. Lung Cancer is a result of exposure to dangerous chemicals that we constantly inhale. Having said that, Lung Cancer can also happen without exposure to any toxic substance.
Unlike normal cells, cancer cells grow quickly and form a tumor, destroying the healthy lung tissue that surrounds them.
CAUSES OF LUNG CANCER
Anyone can be diagnosed with lung cancer. Lung Cancer is caused due to the mutation of cancer cells in the lungs. Even Though 90% of lung cancer is caused due to smoking, there are other factors that may cause lung cancer.
The causes of Lung Cancer include:
- Radon Exposure
- Exposure to Hazardous Chemicals
- Air Pollution
- Genetic Factor such as Family History
TYPES OF LUNG CANCER
Broadly classified on the basis of the microscopic appearance of the tumor cells, Lung Cancer is of two types:
- Small Cell Lung Cancer: Comprising nearly 10-15% of all types of lung cancers, SCLC is the most rapidly growing cancer of all. This kind of lung cancer is caused due to excessive cigarette smoking. SCLC spreads more rapidly and is often diagnosed after it has been spread.
- Non-Small Cell Lung Cancer: The most common type of lung cancer, NSCLC accounts for nearly 85% of all lung cancers. NSCLC is further classified into 3 types on the basis of the type of cell found in the tumor.
- Adenocarcinomas: While this is most commonly associated with smoking, even non-smokers, especially women, may develop this cancer. Adenocarcinomas often develop in the outer, and peripheral areas of the lungs. They may also affect the lymph nodes and further.
- Squamous Cell Carcinomas: This kind of cancer frequently arises in the central chest area, stays within the lungs, spreads to the lymph nodes, and grows large forming a cavity.
- Large Cell Carcinomas: The least of all types of NSCLC, this accounts for 10-15% of all lung cancers. This cancer tends to spread to the lymph nodes and other sites.