{
  "abstract": "The patient was a man in his 20s with a history of childhood asthma who presented with fever and dyspnea. Chest CT revealed diffuse bilateral centrilobular ground-glass opacities, and a history of environmental exposure suggested acute hypersensitivity pneumonitis (HP). However, bronchoalveolar lavage revealed marked eosinophilia (75%), and a transbronchial lung biopsy demonstrated small vessel vasculitis with eosinophilic infiltration. Combined with negative anti-neutrophil cytoplasmic antibodies (ANCA), ANCA-negative eosinophilic granulomatosis with polyangiitis (EGPA) was diagnosed in this patient. Prednisolone (30 mg/day) resulted in rapid improvement, and remission was maintained for 6 months. This case shows that EGPA can mimic acute HP, underscoring the diagnostic value of bronchoscopy and histopathology when eosinophilic inflammation is present.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "name": "Shoichiro Harada"
    },
    {
      "name": "Yasuto Ueda"
    },
    {
      "name": "Shino Arita"
    },
    {
      "name": "Yuri Shibata"
    },
    {
      "name": "Takashi Sumikawa"
    },
    {
      "name": "Yasuyuki Hasegawa"
    },
    {
      "name": "Mizuho Matsushita"
    },
    {
      "name": "Hiroki Chikumi"
    },
    {
      "name": "Akira Yamasaki"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9sxrdt27njfkw.bib",
  "cited_by": 0,
  "doi": "10.2169/internalmedicine.7786-26",
  "fulltext_url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7786-26/_article",
  "id": "9sxrdt27njfkw",
  "issns": [
    "1349-7235",
    "0918-2918"
  ],
  "landing_url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7786-26/_article",
  "language": null,
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "jstage-journal",
      "medicine/general"
    ],
    [
      "openalex",
      "2740|Vasculitis and related conditions"
    ]
  ],
  "openalex": "W7201853307",
  "pdf_url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7786-26/_pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-08",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9sxrdt27njfkw.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "10.2169/internalmedicine.7786-26",
      "source": "jstage",
      "url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7786-26/_article"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2740|Vasculitis and related conditions",
      "subfield": "general"
    }
  ],
  "title": "Eosinophilic Granulomatosis with Polyangiitis Presenting with an Acute Hypersensitivity Pneumonitis-like CT Pattern: A Case Report",
  "title_text": "Eosinophilic Granulomatosis with Polyangiitis Presenting with an Acute Hypersensitivity Pneumonitis-like CT Pattern: A Case Report",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:31Z",
  "url": "https://research.draconitic.com/paper/9sxrdt27njfkw",
  "venue": "Internal Medicine",
  "versions": []
}