Types of mesothelioma
This page tells you about the different types of mesothelioma. There is information about
Types of mesothelioma
There are 2 main types of mesothelioma
- Pleural mesothelioma
- Peritoneal mesothelioma
The pleural type grows in the tissues covering the lungs. The peritoneal type grows in the tissue lining the inside of the abdomen. Pleural mesothelioma is much more common than peritoneal mesothelioma.
Cell types
Mesothelioma is also grouped according to how the cells look under a microscope. When mesothelioma is grouped this way, there are 3 types
- Epithelioid
- Sarcomatoid or fibrous
- Mixed type (also called Biphasic type)
These types of mesothelioma cells can be further divided into other types called clear cell, small cell, acinar cell and tubopapillary cell.
You can view and print the quick guides for all the pages in the About mesothelioma section.
There are 2 main types of mesothelioma
- Mesothelioma in the covering of the lung (pleural mesothelioma)
- Mesothelioma in the abdomen (peritoneal mesothelioma)
Pleural mesothelioma starts in the sheets of tissue that cover the lungs. Peritoneal mesothelioma grows in the tissue lining the inside of the abdomen (tummy). Pleural mesothelioma is much more common than peritoneal mesothelioma.
Pleural mesothelioma is much more common than peritoneal mesothelioma.
Mesothelioma is also grouped according to how the cells look under a microscope. There are 3 types
- Epithelioid - between 5 and 6 out of 10 cases (50 to 60%)
- Sarcomatoid or fibrous - around 1 in 10 cases (10%)
- Mixed type (also called biphasic type) - between 3 and 4 out of 10 cases (30 to 40%)
These types of mesothelioma cells can be further divided into other types called
- Clear cell
- Small cell
- Acinar cell
- Tubopapillary cell
There is information in this section about the types of tests you may have to diagnose mesothelioma and find out what type it is. For more information about mesothelioma, look at our page about what mesothelioma is.







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