Our body is made up of many different types of cells. Bodyalso tightly controls the production of new cells when they are needed. Cancerdevelops when certain cells escape from our body’s control and start to change.These abnormal cells, also called cancer cells, than start to increase and growin the form of a lump, which is called a tumor. Here you will find a described study on lung cancer information.
TUMORS CAN BE BENIGN OR MALIGNANT
Malignant tumors are those, what we know as ‘cancer’ – theyhave the tendency to grow quickly and can spread around the body to otherorgans also.
Benign tumors usually grow very slowly, if at all, and do not spread. However, they can make people ill by pressing some important parts of the body.
Most lung cancers develop in the airways that carry air inand out of our lungs. But they can also start in the lung tissue itself. If thecancer starts in our lung, it is called primary lung cancer. If it has startedin another part of our body and spread to affect our lung, it is calledsecondary lung cance
GENETIC BASIS OF LUNG CANCER
All cells in the body contain the genetic material called deoxyribonucleic acid (DNA). A mature cell divides into two new cells every time, but its DNA is exactly duplicated. New generated cells are copies of the original cell, identical in every way. In this way, our bodies continually replenish themselves. Old cells die off and the next generation replaces them and it is and ongoing process of our bodies.
A cancer begins with an error, or mutation, in a cell’s DNA. DNA mutations can be caused by the normal aging process or through environmental factors, such as cigarette smoke, breathing in asbestos fibers, and to exposure to radon gas.
There are many different types of lung cancer. Here are two main types of lung cancer information:
Small cell lung cancer (SCLC): About 15 percent of lung cancer cases are SCLC. Small cell lung cancer grows quickly and is often at an advanced stage when it is diagnosed.
Non – small cell lung cancer (NSCLC): About 85 percent of cases are NSCLC. Non – small cell lung cancer is actually a group of different types of cancers, including adenocarcinoma, squamous cell carcinoma and large cell carcinoma. These cancers grow more slowly and are usually diagnosed at a stage where they can be removed by an operation.
WHO IS AT RISK?
Anyone can develop lung cancer, but around 85 percent of cases occur in people who smoke or who used to smoke. The risk of getting lung cancer increases with the total number of cigarettes you have smoked. If one stops smoking, the risk gets less over time. Breathing in other people’s smoke over a long period of time can increase your risk of getting lung cancer. The condition usually affects people who are aged 60 – 80. Young people can develop lung cancer, but this is rare. Smoking accounts for about 30% of all cancer deaths. Lung cancer is a leading cause of cancer death in both men and women. Not only does smoking increase the risk for lung cancer, it is also a risk factor for cancers of the: 1- Mouth, 2- Cervix, 3-Pancreas, 4- Kidney, 5- Stomach, 6-Bladder, 7- Liver, 8- Myeloid Leukemia, 9- Colon/Rectum, 10- Pharynx (Throat), 11- Larynx (Voice Box) and 12- Oesophagus(Swallowing Tube).
Cigarettes, cigars, pipes and other types of smokeless tobaccos all cause cancer. There is no safe way to use tobacco.
Smoking damages the airways and small air sacs in our lungs. This damage starts early in smokers and lung function continues to worsen as long as the person smokes. Still, it may take years for the problem to become noticeable enough for lung disease to be diagnosed. Smoking makes pneumonia and asthma even worse. It also causes many other lung diseases that can be as bad as lung cancer.
Non – smokers are more likely to develop one particular type of lung cancer – adenocarcinoma.
THE COMMON SYMPTOMS OF LUNG CANCER INCLUDE
- A cough that lasts more than three weeks
- Feeling out of breath
- Wheezing from one side of chest (this might make itdifficult to sleep on one side)
- Blood in mucus or phlegm
- Weight loss
If symptoms are caused by lung cancer, a tumor can usuallybe detected on your chest X-ray. However, in up to 20 percent of lung cancercases, the X-ray looks normal. One might need further specialized investigationsuch as CT scan, Bronchoscopy/EBUS and PET – CT scan to diagnose Cancer. The treatment optionsdepending on the stage of lung cancer could be in form of surgery, Radiotherapyand chemotherapy.