Definition of lung cancer
The out of control escalation of anomalous cells that grow in one or both of the lungs, usually in the cells that align in the air passages. The abnormal cells do not develops into the healthy lung tissues, they divide very quickly and formulate tumors is called lung cancer.
With the passage of time, tumors becomes bigger and further copious, they chip away at the lung’s capacity to endow the bloodstream with the supply of oxygen. The Tumors that stay in one rest and do not tend to propagate are called benign tumors.
The other kind of tumors is called malignant tumors; these are kinds of one of the most dangerous tumors. They spread to the other parts of the body, either through blood stream or through lymphatic system. Another term that is used in lung cancer and in medical world is called metastasis. Metastasis means the propagation of cancer from the point of origin to other parts of the body. Once cancer spreads and makes his foothold in your body enough, it is when it’s very difficult to treat this lethal disease.
There are mainly two types of lung cancer, generally prevailed in the medical world now a days, these are primary lung cancer and secondary lung cancer. In primary lung cancer it originated in the lungs. However in the secondary lung cancer it starts somewhere else in the body metastasizes and then manages to reach at lungs. They are known as the different kinds of cancer and are not treated in the same way as lung cancer is treated generally.
According to the data provided by the concerned institute of national cancer institute, by the end of 2015, there will be 221201 new lung cancer diagnosis will occur and there will be estimated 158041 deaths will be witnessed due to lung cancer, according to the estimates of national cancer institute in United States of America.
Also according to the reports of largest health organization, world health organization (WHO), 7.6 deaths are caused by cancer around the globe every year. Cancer contributes to the 13% deaths globally. As we will discuss under, lung cancer is the largest cancer which causes deaths.
Now we will summarize total deaths caused by cancer each year around the globe which are enumerated as under
Deaths caused by lung cancer are 1,370,000 each year
Deaths caused by stomach cancer are 736,000 each year.
While the deaths contributed by liver cancer each year are 695,000 each year
Deaths caused by colorectal cancer are 608,000 each year globally
While the breast cancer is the contributor of cancer deaths with an estimated deaths of 458,000
And the cervical cancer becomes the reason of cancer deaths at along 275,000 deaths each year around the globe.
Now we can see and observe easily with the facts and figures described above that lung cancer is the largest contributor of cancer deaths each year around the globe.
Signs of lung cancer
There are many signs of lung cancer from which one can easily perceive that if he has developed this lethal cancerous disease or not. If someone founds many of the signs of lung cancer in him he should immediately rush to a qualified and trusted physician for his complete medical checkup to confirm that if he has developed this disease or not. Because cancer can be treated in the initial stages but it’s very tough to cure the cancer in the last stages. So one must take a complete medical checkup and if the disease of cancer especially lung cancer is diagnosed, he must get complete medical treatment at the earliest of the stages, so one can safeguard his life at the earliest of the cancerous stage. Here are some most common signs of lung cancer are given under so that you can easily assess whether you have developed the disease or not.
The patient develops a cough that does not go away or gets down.
Blood comes in the coughing or rust colored sputum (spit or phlegm) is shown.
The patient of this disease will have a symptom of chest pain that becomes more painful when the patient takes deep breathes, laughs or coughs.
The patient feels croakiness
One of the signs of lung cancer is that there is an occurrence of weight loss and loss of appetite also.
There is feeling of shortness of breath
The signs of lung cancer are also shown when the victim feels very tired or weak also.
There are infections such as bronchitis and pneumonia that does not goes away and keep coming back to the affected person recurring.
There is a new onset of the patient getting out of breath.
When the lung cancer spreads to other parts of the body them the signs of lung cancer are described as under
There is a constant feeling of back pain or pain in the hips.
In case, if the lung cancer spreads to brain then the signs of lung cancer becomes the patient feels headache, lack of sensation in arm or legs, feelings of faintness, and there are balance problems also faced by patient when cancer rushes to brain and also seizures. The cancer may also affect spinal cord along with nervous system also.
If this cancer reaches liver then yellowing of the eyes and skin occurs this is called as jaundice.
- Lumps across the exterior of the body, because of the cancer spreading to the skin or to lymph nodes which are collections of immune system cells, like those in the neck or above the collarbone are found.
These signs of lung cancer are not necessarily of lung cancer but some other diseases can also cause such signs of lung cancer. However as described earlier, that if you develop such signs and symptoms, you must approach a qualified doctor and get complete medical checkup to safeguard your most precious life at the earliest of the stage of the disease, because it’s always easy to cure the disease at the early stages, but very tough at the last stages.
Some lung cancers can cause syndromes which are described under as
Superior vena cava syndrome
Paraneoplastic syndrome etc.
Symptoms of lung cancer
As we have discussed earlier the signs of lung cancer now we are going to discuss the symptoms of lung cancer which are almost the same but we will discuss here in detail and describe it which are as under
- About 25% people which are victims of lung cancer show no symptoms of lung cancer until they are diagnosed with the disease. Their cancer is usually diagnosed while doing x ray or CT scan done for other purposes. But most of them approximately 75% have developed symptoms of lung cancer before they are diagnosed. Here we are going to discuss the most common causes and symptoms of lung cancer which are
- Wheezing, in simple words patients feels out of breath. A whistle sound is heard when one exhales due to constricted airway. This is a symptom of many lung diseases which includes lung cancer also. It means if you have a whistling sound when you exhale, chances are that you have developed lung cancer. Out of breathing can also occur due to some tumor alongside the airways.
- The patient feels difficulty in swallowing.
- There is a pain in the shoulder and outside of the arm
- There is hoarseness found
- Chest pain
- Hemoptysis etc.
These are the most common symptoms of lung cancer.