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Updated: Jul 18, 2026

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Published on: May 10, 2024
[A case of toxocariasis with eosinophilic pleural effusion]
Masafumi Seki1, Kenji Hiromatsu, Kosuke Kosai
1Department of Internal Medicine, Kitakyushu City Yahata Hospital.
Abstract:
A 76-year-old man admitted for general malaise with fever was found in clinical examination on admission to have eosinophilic pleural effusion, peripheral eosinophilia, and a slightly elevated inflammatory reaction. Immunological examination, including microplate ELISA, showed a high titer of specific antibody against Toxocara canis in both the serum and pleural effusion. We started treatment using albendazole, and found inflammatory findings and serum IgE were ameliorated. Parasitic disease is an important consideration in the differential diagnosis of eosinophilic pleural effusion, and serology is useful in screening for this.
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