Presence of a chronic nonreactive thrombocythemic state that is not accounted for by one of the other chronic myeloproliferative disorders chronic myelogenous leukemia (CML) polycythemia vera (PV) primary myelofibrosis (PMF).
2.5 new cases/100000 population per year
Approximately 6000 people are diagnosed each year in the US.
Female to male ratio of approximately 21
Median age at diagnosis is 60 years
4 (No Transcript) 5 Clinical Features of ET
Up to one-half of patients with ET may be totally asymptomatic at presentation.
The remaining patients may report vasomotor symptoms or manifest thrombohemorrhagic complications.
6 Clinical Features of ET
Atypical chest pain
Erythromelalgia (burning pain of the hands or feet associated with erythema and warmth)
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