The history of lung cancer remains largely unknown. Some records show that lung cancer was quite uncommon prior to the popularity of cigarette smoking. The early record of lung cancer as a disease probably goes back to late 18th century where several autopsies showed evidences of malignant lung cancers among cancer patients. In early 20th century, the number of lung cancer patients worldwide is less than 400 cases. Cigarette smoking, pipe or cigar smoking, air pollution, passive smoking, asbestos and lung diseases such as tuberculosis and chronic obstructive pulmonary disease are said to be the major causes of lung cancer. Other than these, radon, which is present in outdoor as well as indoor air, is also said to contribute to lung cancer incidence.
Lung cancer survival rates, up to this day are difficult to measure. There is no record whether a survival rate measurement takes into account patients who have completed treatments or patients who are in remission or cured. Symptoms that generally suggest lung cancer include shortness of breath (dyspnea), blood cough (hemoptysis), chronic coughing, wheezing, chest pain, weight loss, fatigue, loss of appetite, hoarse voice (dysphonia), and difficulty in swallowing (dysphagia). If you have a family member or a close friend who shows these symptoms you may want to advice them to visit a physician for further diagnose. You may want to read Health Facts concerning lung cancer to help you find the best treatment for your loved one if they are diagnosed with the disease.