{
  "abstract": "High-flow renal arteriovenous malformations (AVMs), type III with vein aneurysms, are rare and often require nephrectomy. A 54-year-old man presented with lumbar pain and hematuria. Computed tomography angiography revealed an 8- × 12-cm right renal vein aneurysm and a type III arteriovenous fistula occupying >30% of the kidney. After ex vivo nephrectomy with cold perfusion, selective methylene blue injection delineated the AVM nidus and parenchyma, guiding resection and excision. The procedure was performed by a multidisciplinary team including a vascular surgeon, transplant surgeon, and urologist. The kidney was reconstructed and reimplanted. Postoperative creatinine levels stabilized at 1.10 mg/dL, and computed tomography angiography confirmed AVM exclusion and preserved perfusion. Methylene blue mapping can enable parenchyma-sparing repair in selected cases.",
  "abstract_shown": true,
  "affiliations": [
    "Unit of Vascular Surgery, Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli I.R.C.C.S., Rome, Italy.",
    "Unit of Vascular Surgery, Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli I.R.C.C.S. - Università Cattolica del Sacro Cuore, Rome, Italy."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Ottavia Borghese"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Francesco Sposato",
      "orcid": "0009-0006-4642-9058"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yamume Tshomba"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/br8nbrrjck6c2.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jvscit.2026.102511",
  "fulltext_url": "https://europepmc.org/articles/PMC13677945",
  "id": "br8nbrrjck6c2",
  "issns": [
    "2468-4287"
  ],
  "landing_url": "https://europepmc.org/article/MED/42898592",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2728|Vascular Malformations Diagnosis and Treatment"
    ]
  ],
  "openalex": "W7213437178",
  "pdf_url": "https://europepmc.org/articles/PMC13677945?pdf=render",
  "pmcid": "PMC13677945",
  "pmid": "42898592",
  "published": "2026-09-16",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/br8nbrrjck6c2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:41Z",
      "native_id": "MED:42898592",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42898592"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2728|Vascular Malformations Diagnosis and Treatment",
      "subfield": "neurology"
    }
  ],
  "title": "Methylene blue-guided parenchyma-sparing ex vivo resection and autotransplantation for a type III renal arteriovenous fistula with large renal vein aneurysm: A technical case report.",
  "title_text": "Methylene blue-guided parenchyma-sparing ex vivo resection and autotransplantation for a type III renal arteriovenous fistula with large renal vein aneurysm: A technical case report.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:41Z",
  "url": "https://research.draconitic.com/paper/br8nbrrjck6c2",
  "venue": "Journal of vascular surgery cases and innovative techniques",
  "versions": []
}