PMC9637965_01
(a) Chest radiograph showed an infiltrative shadow in the right upper lung field.. (b) Chest CT showed multiple graund-glass shadows on the outer side of the right lung.
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Four weeks prior to admission, the patient was diagnosed with eosinophilic pneumonia due to increased blood eosinophil counts (13,680/muL) and ground-glass shadows on chest radiograph and computed tomography (CT) (Fig. 1).
(a) Skin lesion presenting as purpuric bullous rash in lower limbs, and an ulceration.. (b) Skin biopsy specimens of the lower limbs showed fibrinoid necrosis and eosinophil infiltration in the peripheral blood vessels. (c) Foci of histiocytes around blood vessels and peripheral nerves in the deep dermis.
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A skin biopsy of lower limb purpura revealed fibrinoid necrotic vasculitis of the superficial blood vessels, along with nuclear dust and perivascular eosinophilic dermatitis with neutrophil and granulomatous inflammation (Fig. 2).