COVID-19 Pneumonia or Hypereosinophilic Syndrome?

Istemi Serin, Avni Ulusoy, Avni Ulusoy, Mediha Irem Onar, Avni Ulusoy, Mehmet Hilmi Dogu, Mediha Irem Onar, Mediha Irem Onar, Mehmet Hilmi Dogu, Mehmet Hilmi Dogu


Hypereosinophilic syndromes (HESs) are a group of disorders characterized by pathological proliferation of eosinophils. Diagnostic criteria include eosinophil count of 1,500/mm3 or higher, presence of organ involvement and exclusion of other causes of eosinophilia for at least 6 months. A 69-year-old male patient was referred to the pandemic clinic with a preliminary diagnosis of coronavirus disease 2019 (COVID-19) with fever and dyspnea. Computed tomography (CT) was compatible with COVID-19, nasopharyngeal swab polymerase chain reaction (PCR) was negative for two times. He had 20,000/mm3 eosinophilia and retrospective examinations showed that he have had eosinophilia for more than 1 year. Platelet-derived growth factor receptor alpha (PDGFRa) resulted positively. After starting parenteral methylprednisolone with a dose of 1 mg/kg, he was discharged with oral maintenance therapy. In outpatient follow-up, it was observed that eosinophilic pneumonia completely regressed. HES may occur with multiple system and organ involvement and findings. In the differential diagnosis of patients presenting with heart failure, pulmonary involvement and eosinophilia, HES must definitely be considered.

J Med Cases. 2020;11(12):400-402


COVID-19; Eosinophilia; Hypereosinophilic syndrome; Pulmonary involvement

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