Cancer is caused by cells with abnormalities that grow and take over a part of tissue. Myeloproliferative neoplasms are considered cancer because they are characterized by abnormal cell growth. Originally, MPNs were called myeloproliferative disorders, but became known as myeloproliferative neoplasms in recent years as it more accurately describes the blood forming abnormalities classifying this group of diseases. Neoplasm means abnormal cell growth, which includes cancer. While this means MPNs are considered cancer, they are types of cancer that a person can live with for many years without the need to cut out the cancer or receive chemotherapy like other common cancers. Many people with MPNs who receive therapy have a normal or near normal life expectancy.
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