Mesothelioma is very deadly but often difficult to diagnose because of its unusually long latency period (up to several decades). People who have been exposed to asbestos and developed mesothelioma may not feel the effects until 30 to 50 years later, when the cancer has progressed to an advanced stage

Mesothelioma Subcategories

While mesothelioma can spread throughout the body as it progresses, it generally begins in one primary location. The three types of mesothelioma according to its location are:

• Pleural mesothelioma: This disease affects the pleura, a segment of the mesothelium that covers and protects the lungs. It is the most common form of mesothelioma, making up about 75% of all diagnosed cases. Symptoms of this illness include a chronic cough, chest pain and shortness of breath.

• Peritoneal mesothelioma: Up to 20% of mesothelioma cases are peritoneal mesothelioma. This disease attacks the peritoneum, a protective membrane over the abdomen. Symptoms of this form of mesothelioma include abdominal pain, persistent nausea and vomiting, loss of appetite, and digestive problems.

• Pericardial mesothelioma: This is the rarest form of mesothelioma, accounting for only about 5% of cases. This illness affects the pericardium, which is the part of the mesothelium that covers and protects the heart. Symptoms of pericardial mesothelioma include persistent chest pain, irregular heartbeats, shortness of breath, and fatigue.