Any potential growth of this particular nature may result in what is known as "Metastasis." In this specific situation, the cancer spreads beyond the lungs to other parts of the patient's bodily organs.

Presently, lung-cancer is the most prevalent cause of cancer-related deaths in men, and the second most common in women (following breast-cancer).

There are an estimated annual 1.3 million deaths worldwide from lung-cancer.

While the most common cause of lung-cancer today is long-term exposure to tobacco-smoke, long-term exposure to Asbestos is also a significant factor in the development of lung-cancer.

For example, in the U.K. alone, exposure to Asbestos accounts for approximately 2-3 per-cent of all lung-cancer-related deaths per year.