Case Report

Eosinophilic Pleural Effusion: A Rare Manifestation of Hypereosinophilic Syndrome

Table 1

Pleural fluid (PF) analysis at monthly intervals. This shows that the eosinophilia in pleural fluid persisted for months despite therapy.

PF analysis 1PF analysis 2PF analysis 3
(Day 3)(Day 30)(Day 64)

Lipase U/L<1010
LDH U/L9479458
Protein g/dL4.884.61<1.0
Glucose mg/dL9637
Amylase U/L<10<10
Nucleated cell count15305801300
Red blood cells45062512640
Abnormal cells000
CultureNegativeNegativeStaph. aureus
Cytology25%–30% eosinophils25% eosinophilsPrimarily eosinophils
No neoplastic cellsNo neoplastic cellsNo neoplastic cells

LDH: Lactate dehydrogenase.