Mesothelioma is a serious and rare form of lung cancer. It is most frequently seen in men between the ages of 50 to 70. Women are affected far less frequently. In the US, between 2000 and 3000 cases are diagnosed each year. Estimates suggest that the incidence of mesothelioma for every 100,000 in the US is about 1.8 and 0.9 internationally. This form of cancer affects people of every race equally. The number of people who have been diagnosed with mesothelioma has increased significantly in the past 30 years. Although many advances in treatment have been made, there is no cure for this type of cancer.