Splenomegaly is least likely associated with aEUR'
Primary thrombocytosis The question is about the differential diagnosis of myeloprohferative syndrome. - Myeloproliferative disorders are characterized by splenomegaly except for essential thrombocytosis. In Essential thrombocytosis - "Physical examination is generally unremarkable except occasionally for mild splenomegaly. Massive splenomegaly is more indicative of another myeloproliferative disorder in paicular polvcythetnia vera, idiopathic mvelofibrosis and chronic myeloid leukemia".
CML
Polycythemia ruba vera
Idiopathic myelofibrosis
Primary thrombocytosis