{
  "abstract": "Background\n\nSpinal extradural arachnoid cysts (SEACs) are rare lesions that can cause progressive neurological symptoms due to spinal cord compression. Typically, these cysts are connected to the intradural subarachnoid space through a small defect in the dural sac. Surgical repair requires accurate identification of the dural defect; however, pre-operative localization remains challenging. We report a case of a SEAC in which the location of a dural defect was suggested preoperatively with the use of T2*-reversed magnetic resonance imaging (MRI).Case description\n\nA 62-year-old woman presented to our hospital with a known thoracic cystic lesion and worsening urinary frequency and neurological symptoms. She presented with lower-extremity hyperreflexia, right iliopsoas weakness, deep sensory disturbance in the right lower limb, urinary frequency, and headache. Pre-operative MRI demonstrated a cystic lesion extending from Th (thoracic) 12 to L (lumber) 1. Notably, T2*-reversed imaging suggested a dural defect at the right lateral aspect of Th12. The patient was diagnosed with a SEAC, and surgical exploration confirmed a dural defect at the predicted site, which was directly sutured. Postoperatively, the cyst markedly decreased in size, and the patient's symptoms gradually improved.Conclusion\n\nWe report a case of a SEAC, focusing on pre-operative localization of a dural defect. This case suggests the potential usefulness of T2*-reversed MRI for pre-operative localization of dural defects in SEACs.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Neurosurgery, Ehime University School of Medicine, Toon, Ehime, Japan."
  ],
  "article_type": "case report",
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Seiji Shigekawa"
    },
    {
      "affs": [
        0
      ],
      "name": "Akihiro Inoue"
    },
    {
      "affs": [
        0
      ],
      "name": "Kohno Daisuke"
    },
    {
      "affs": [
        0
      ],
      "name": "Masahiro Nishikawa"
    },
    {
      "affs": [
        0
      ],
      "name": "Takeharu Kunieda"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9djgsqgzj54zy.bib",
  "cited_by": 0,
  "doi": "10.25259/sni_629_2026",
  "fulltext_url": "https://europepmc.org/articles/PMC13726827",
  "id": "9djgsqgzj54zy",
  "issns": [
    "2229-5097",
    "2152-7806"
  ],
  "landing_url": "https://europepmc.org/article/MED/42974546",
  "language": "eng",
  "licence": "CC-BY-NC-SA",
  "licence_label": "CC BY-NC-SA",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Case Report"
    ],
    [
      "openalex",
      "2728|Neurosurgical Procedures and Complications"
    ]
  ],
  "openalex": "W7221124895",
  "pdf_url": "https://europepmc.org/articles/PMC13726827?pdf=render",
  "pmcid": "PMC13726827",
  "pmid": "42974546",
  "published": "2026-10-09",
  "publisher": "Scientific Scholar",
  "ris": "https://research.draconitic.com/paper/9djgsqgzj54zy.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:20:49Z",
      "native_id": "MED:42974546",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42974546"
    },
    {
      "first_seen": "2026-11-05T12:23:04Z",
      "native_id": "PMC13726827",
      "source": "pmc",
      "url": "https://doi.org/10.25259/sni_629_2026"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2728|Neurosurgical Procedures and Complications",
      "subfield": "neurology"
    }
  ],
  "title": "Pre-operative identification of a dural defect using T2*-reversed magnetic resonance imaging in a spinal extradural arachnoid cyst: A case report.",
  "title_text": "Pre-operative identification of a dural defect using T2*-reversed magnetic resonance imaging in a spinal extradural arachnoid cyst: A case report.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T12:22:40Z",
  "url": "https://research.draconitic.com/paper/9djgsqgzj54zy",
  "venue": "Surgical neurology international",
  "versions": []
}