What is Mesothelioma?
Thursday, May 21, 2009

Tumors of the mesothelium can be benign or they can be cancerous. A cancerous tumor of the mesothelium is called a malignant mesothelioma, but this is often shortened to just mesothelioma. The information that follows covers only those tumors that are cancer.
Main types of mesothelioma
There are 3 main types of mesotheliomas based on how the cells look under a microscope.
- epithelioid: This is the most common type. It tends to have a better outlook (prognosis) than the other types.
- sarcomatoid (fibrous): About 1 or 2 out of 10 mesotheliomas are of this type.
- mixed (biphasic): This type has features of the 2 types above. About 3 or 4 out of 10 mesotheliomas are the mixed type.
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