I, as a student of Medical Sciences, studied about the disease named Mesothelioma which is an exceptional disease which takes the form of Cancer which is caused by asbestos and expands in the mesothelial cells. These cells form tissue that line or surround the stomach, heart and lungs and also provide a kind of shield to these organs by generating a lubricating fluid that makes their movement efficient and smooth. This disease can be malignant (cancerous) or benign (non – cancerous). The most ordinary form of Mesothelioma develops in the people who work in such professions where they inhale asbestos particles. So the most common form is Pleural Mesothelioma which is formed in the lungs of a person. Other forms include Peritoneal Mesothelioma which develops in the abdomen, Pericardial Mesothelioma which begins from the area surrounding heart. Adenomatoid tumor is a benign tumor that develops in certain male and female reproductive organs. It starts in the mesothelium and is not to be confused with Malignant Mesothelioma. Detailed information on this type of disease can be achieved from the mentioned link mesothelioma.us