GTR Culture Forums: Do You Know These Things About Lung Cancer? - GTR Culture Forums

INTRODUCTION

Lung cancer may also be the most tragic cancer because in most cases, it might have been prevented, 87% of cases are caused by smoking. Lung cancer has long been the most common cause of cancer death in men and since 1987 it has also become the most common cause of cancer death in women. It is the second most commonly occurring form of cancer in most western countries and although the 小細胞肺癌 incidence is less common in developing countries, the rapid increase in the popularity of smoking will see the number of sufferers in those countries quickly catch up with the western world.

Lung cancers can arise in any part of the lung, and 90%-95% of cancers of the lung are thought to arise from the epithelial, or lining cells of the larger and smaller airways (bronchi and bronchioles); for this reason, lung carcinomas are sometimes called bronchogenic carcinomas or bronchogenic cancers.

The most common types are epidermoid carcinoma, small cell carcinoma, adenocarcinoma and large cell carcinoma.

Most experts agree that lung cancer is attributable to inhalation of carcinogenic pollutants by a susceptible host. Who is most susceptible? Any smoker over the age of 40, especially if they began smoking before the age of 15, have smoked 20 or more for 20 years, or worked with or near asbestos. Two other factors also increase susceptibility: exposure to carcinogenic industrial and air pollutants (asbestos, uranium, arsenic, nickel, iron oxides, chromium, radio active dust, and coal dust.) and familial susceptibility.