By Stage 1 mesothelioma the tumors remain localized in and around the tissue lining of the lung; making it the least advanced stage of mesothelioma. Patients are likely to have a better prognosis, as many different treatment options are available in order to offer a longer life expectancy.
For some patients, the 2-year survival rate is between 41 to 46 percent.
Tumors have developed on the pleural lining – the thin protective tissue around the lungs, at Stage 1 pleural mesothelioma.
By this point cancer cells have not yet dispersed through the bloodstream or the lymph nodes.
Control of the cancer ultimately prolongs life – early stages have a better prognosis, as chemotherapy, surgery and radiation are more effectively controlled at Stage 1 compared to the later stages of mesothelioma.
The first stage of pleural mesothelioma consists of two divided parts: 1A and 1B.
The cancer has not spread to any lymph nodes or distant sites throughout the body at Stage 1 diagnosis, regardless of mesothelioma dispersion into nearby tissues. While peritoneal mesothelioma has no official staging system, if the cancer has not spread beyond the lining of the abdomen it is usually considered as early-stage cancer.