Different symptoms can show up in this regard. Mostly they are like the primary cancer but others can vary also like • Increased stress • Nausea • Vomiting. These things can happen because brain would not be working properly so it can affect vision, body balance and cause seizures.

The stage of lung cancer determines the degree of metastasis. It implies that the cancer cells are spread to other body parts. As the disease is prolonged it keeps on moving to other parts like brain, bones( especially vertebral column, thighs and ribs), heart and liver.

First and foremost thing is to quit smoking and take diet high in fruit and vegetables. As soon as you quit smoking the dead cells start to recover. Apart from that Radiation therapy, Chemotherapy, Biological therapy and surgery may be the ways to treat lung cancer.

Yes. Numb tongue can be experienced during lung cancer treatment due to chemotherapy and radiations which damage healthy cells also in process to disinfect infected cells quickly.

Through blood vessels cancer has spread beyond one lung and nearby lymph nodes, and have invaded both lungs, more-remote lymph nodes, and other organs, such as the liver, bones or brain

People exposed to • Smoke(passive smoking) • Pollution, exposure to diesel(Traffic wardens, truck drivers, heavy plant operators, railway workers, mechanics etc) • Radon gas(Workers in mines)

It was reported by an unauthorized source, but it is confirmed that President Obama did smoke a lot and also lost weight but it was never confirmed that he had lungs cancer. And he is also trying to quit smoking.

It really depends upon the stage of lungs cancer and the extent to which it has affected other areas of body. Mostly people suffer from breathing problem and they are highly dosed to avoid pain. They may land in comma and die while asleep. Fluids are repeatedly accumulated in the lungs which cause pain and breathing problem and consequently patients are put on ventilators. At times they are tied up also to, so that they do not remove apparatus.

If lung cancer extends to brain it can affect vision, disturb the body balance and patient may have seizures. Where as in bones it can cause pain, usually in the back, thighbones and ribs.

The lung cancer is curable when detected at an earlier stage of the disease. The specialized doctor may recommend a combination of chemotherapy and radiation therapy. Others may suggest surgical removal of the tumor, if it is localized.