Severe Persistent Hypereosinophilia of Undetermined Significance: Diagnostic Challenges in Clinical Practice and Two-Year Follow-Up
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Background: Hypereosinophilia of undetermined significance (HE-US) represents a rare subtype of hypereosinophilia (HE) defined by a persistent absolute eosinophil count (AEC) ≥ 1500/uL without an identifiable reactive or clonal ... ...
