Breadcrumb Home Get Educated & Inspired Explore Cancer Types Myeloproliferative Neoplasms MPN Unlocked Essential Thrombocythemia (ET) Essential Thrombocythemia Webpage Check out this webpage with information about ET. Source: Leukemia and Lymphoma Society Learn About ET Understand your ET diagnosis. Source: MPN Research Foundation Managing Essential Thrombocythemia Check out this article about managing Essential Thrombocythemia. Source: Cancer Care Understanding Your ET Diagnosis Understand your ET diagnosis and treatment options with this resource. Source: Cancer Support Community