8 Facts About Non-Small Cell Lung Cancer
There are two major forms of lung cancer and they're differentiated on the basis of the structural appearance of the cancer cells under a microscope. These two major types of lung cancer are non-small cell lung cancer and small cell lung cancer. Here are key facts about non-small cell lung cancer (NSCLC), the most common.
Non-small cell lung cancer occurs when malignant cells form in the tissues of the lung. It accounts for about 80 percent of all lung cancer cases.
There are three different types of non-small cell lung cancer. They are:
- Squamous cell (epidermoid) carcinoma - accounts for about one-third of NSCLC cases and usually occurs in smokers.
- Adenocarcinoma - accounts for about 35 percent of NSCLC cases and can occur in both smokers and non-smokers.
- Large cell carcinoma - this is a very aggressive form of NSCLC that grows and spreads rapidly. It accounts for less than 10 percent of NSCLC cases.
This means they do not exhibit clinical signs or symptoms of the disease. The absence of clinical signs and symptoms during the early stage of the disease is a major factor that often contributes to a significant delay in diagnosis of the condition.
By: HealthCentral Editorial Team
Source: Medifocus Guidebook
There are numerous symptoms of lung cancer, but the most common ones are persistent or worsening cough, shortness of breath (dyspnea) and coughing up blood or rust-colored sputum.
In general, some of the more common problems encountered by cancer patients either as a result of the disease itself or as a side-effect of cancer treatments include:
- Sleep disorders
- Diminished exercise capacity
- Unintentonal weight loss
The earlier someone begins smoking and the longer they smoke, the greater the risk they have of developing lung cancer. Other risk factors include family history, secondhand smoke exposure and air pollution.
According to data from the National Cancer Institute, the average five-year survival rate of someone with stage IV non-small cell lung cancer is 1 percent. By contrast, the average five-year survival rate of someone with stage 1A non-small cell lung cancer is 49 percent.
Research has shown that doing spiral CT scans and testing sputum samples in people who are at higher risk for lung cancer may be effective in helping with early detection.