{
  "abstract": "Microscopic polyangiitis (MPA) is an ANCA-associated vasculitis that affects multiple organs. However, cardiac involvement is rare in these patients. We herein report a rare case of MPA presenting with marked peripheral edema and weight gain due to acute pericarditis with borderline tamponade physiology and possible effusive-constrictive features, resulting in right-sided heart failure. Myeloperoxidase-ANCA was strongly positive, and the patient subsequently developed rapidly progressive renal dysfunction. A renal biopsy revealed pauci-immune crescentic glomerulonephritis, confirming the diagnosis of MPA. This case highlights pericarditis with pericardial compressive syndrome as an atypical initial manifestation of MPA.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "Kazuhito Hirata"
    },
    {
      "name": "Shuhei Yamasaki"
    },
    {
      "name": "Junya Izena"
    },
    {
      "name": "Tomohiro Arakaki"
    },
    {
      "name": "Kageyuki Ohba"
    },
    {
      "name": "Osamu Arasaki"
    },
    {
      "name": "Masanori Kakazu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3vsbjzc54146n.bib",
  "cited_by": 0,
  "doi": "10.2169/internalmedicine.7613-26",
  "fulltext_url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7613-26/_article",
  "id": "3vsbjzc54146n",
  "issns": [
    "1349-7235",
    "0918-2918"
  ],
  "landing_url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7613-26/_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": "W7167891279",
  "pdf_url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7613-26/_pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3vsbjzc54146n.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "10.2169/internalmedicine.7613-26",
      "source": "jstage",
      "url": "https://www.jstage.jst.go.jp/article/internalmedicine/advpub/0/advpub_7613-26/_article"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2740|Vasculitis and related conditions",
      "subfield": "general"
    }
  ],
  "title": "Atypical Presentation of Microscopic Polyangiitis with Pericarditis Manifesting as Right-Sided Heart Failure",
  "title_text": "Atypical Presentation of Microscopic Polyangiitis with Pericarditis Manifesting as Right-Sided Heart Failure",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:31Z",
  "url": "https://research.draconitic.com/paper/3vsbjzc54146n",
  "venue": "Internal Medicine",
  "versions": []
}