Splenomegaly, or enlargement of the spleen, is common in patients with Philadelphia-negative myeloproliferative neoplasms, and it is associated with symptoms like early satiety and abdominal pain. The role that splenomegaly has in terms of quality of life and prognosis in primary myelofibrosis is fairly well understood, but it has been less frequently investigated among patients with essential thrombocythemia (ET) and polycythemia vera (PV).