Types of Mesothelioma
Mesothelioma is a cancerous tumor of the mesothelium that can invade neighboring tissues and destroy them. It can also spread (metastases) to other parts of the body. Mesothelium is the coating that lines the outer surface of most internal organs. According to the body, it covers, it may bear different names.
Pleural mesothelioma originates in the pleura, the membrane that covers the lungs. This is the most common type of mesothelioma. More men than women are diagnosed with pleural mesothelioma.
Peritoneal mesothelioma originates in the peritoneum, which lines the inside of the abdomen and covers many abdominal organs. This is the second most common type of mesothelioma. It occurs in both men and women.
The following cancerous tumors of the mesothelium are very rare.
The pericardial mesothelioma starts in the pericardium, the casing that surrounds the heart. The most common symptoms of pericardial mesothelioma are cardiac disorders caused by the tumor or an accumulation of fluid around the heart. These include chest pain, chest pain that gets worse when you breathe deeply or a cough, breathing problems, anxiety or agitation. Palpitations (feeling that the heart is beating fast, very quickly or irregularly) are another symptom of this type of cancer. Treatment may include surgery, radiotherapy or chemotherapy. Pericardial Mesothelioma is associated with a very dark prognosis (outcome).
The mesothelioma of the vaginal tunic originates in the vaginal tunic, the envelope that covers the testicles. Its most common symptoms are pain and swelling of the testicles. It is treated by surgery in which the testes, scrotum and lymph nodes present in this region are removed. Radiation therapy may be offered after surgery. As this disease is very rare, the role of chemotherapy in treating mesothelioma of the vaginal tunic remains unknown.
Cell Types of Mesothelioma
Mesothelioma can also be described according to the cell constitution of the tumor, which is determined by examining samples under a microscope. Mesothelioma can be 3 main cell types.
Epithelioid mesothelioma is the most common cell type. It produces a more favorable prognosis than other cell types.
Sarcomatoid mesothelioma, or fibrous mesothelioma, is the second most common cell type. It spreads faster than epithelioid mesothelioma.
Mixed mesothelioma, or biphasic mesothelioma, is composed of tumors containing both epithelioid and sarcomatoid regions. Tumors that contain more epithelioid cells produce a better prognosis than those that contain more sarcomatoid cells.