Most known cancers have various staging systems which have been developed to aid doctors and physicians in the diagnosis and treatment of individual cases of cancer.
Pleural mesothelioma is the only form of mesothelioma that has been successfully staged as it is the commonest type of the disease.There are three different staging systems used to determine the extent of pleural mesothelioma, each one of these three different staging systems measure different aspects of the cancer,including the size of the tumor, the level of spreading{metastases}and the probable involvement of lymph nodes.
The stage of mesothelioma at the time of diagnosis determines to a very large extent the type of treatment prescribed by the doctor.
Butchart System
The Butchart System is the oldest staging system for malignant mesothelioma and is the one most commonly used by doctors and specialists to diagnose and treat the tumor. The Butchart System is based on the tumor size (mass) and divides malignant mesothelioma into four stages.