{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T01:19:49Z","timestamp":1787707189677,"version":"build-2784847793"},"reference-count":9,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"8","license":[{"start":{"date-parts":[[2026,8,24]],"date-time":"2026-08-24T00:00:00Z","timestamp":1787529600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Neurosurg Case Lessons"],"published-print":{"date-parts":[[2026,8,24]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>Dural metastasis is a distinct entity from metastatic brain tumors with secondary dural invasion and may mimic meningioma on neuroimaging. Skull base involvement is relatively uncommon and can present a diagnostic challenge.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBSERVATIONS<\/jats:title>\n                    <jats:p>A 74-year-old woman presented with left lip and tongue numbness and diplopia. MRI revealed a 21 \u00d7 16\u2013mm homogeneously enhancing mass at the left cerebellopontine angle along the anterior petrous ridge with a dural tail sign, suggestive of a skull base meningioma. The tumor was removed via an anterior transpetrosal approach. Intraoperative frozen-section analysis suggested meningioma; however, permanent histopathological evaluation revealed dural metastasis of lung adenocarcinoma.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>LESSONS<\/jats:title>\n                    <jats:p>Misinterpretation of the frozen-section analysis was likely caused by crush artifacts and architectural distortion that obscured glandular structures and produced meningothelial-like cellular clusters with whorl-like formations. Skull base dural metastasis can closely mimic meningioma both radiologically and intraoperatively.<\/jats:p>\n                    <jats:p>\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"uri\" xlink:href=\"https:\/\/thejns.org\/doi\/10.3171\/CASE26425\">https:\/\/thejns.org\/doi\/10.3171\/CASE26425<\/jats:ext-link>\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.3171\/case26425","type":"journal-article","created":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T00:01:20Z","timestamp":1787097680000},"source":"Crossref","is-referenced-by-count":0,"title":["Lung adenocarcinoma dural metastasis at the petroclival region mimicking meningioma: a frozen-section diagnostic pitfall. Illustrative case"],"prefix":"10.3171","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-4468-7873","authenticated-orcid":true,"given":"Tomoya","family":"Sofue","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6348-2372","authenticated-orcid":true,"given":"Yudai","family":"Morisaki","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-1486-9878","authenticated-orcid":true,"given":"Yumi","family":"Ko","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kenta","family":"Nakase","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shohei","family":"Yokoyama","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7278-3978","authenticated-orcid":true,"given":"Shuichi","family":"Yamada","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1340-3293","authenticated-orcid":true,"given":"Ichiro","family":"Nakagawa","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Nara Medical University Hospital, Kashihara, Nara, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"issue":"9","key":"bib1","series-title":"Cancer","first-page":"1947","article-title":"Intracranial dural metastases","volume":"115","author":"Nayak","year":"2009","unstructured":"Nayak LAbrey LEIwamoto FM.Intracranial dural metastases. Cancer. 2009;115(9):1947-1953. doi:10.1002\/cncr.24203"},{"issue":"1","key":"bib2","series-title":"BMC Med Imaging","first-page":"163","article-title":"A proposed imaging scoring system to differentiate dural-based metastasis from meningioma using MR and CT images","volume":"25","author":"Alali","year":"2025","unstructured":"Alali AAAljaafary MAlBaker K.A proposed imaging scoring system to differentiate dural-based metastasis from meningioma using MR and CT images. BMC Med Imaging. 2025;25(1):163. doi:10.1186\/s12880-025-01723-z"},{"issue":"7","key":"bib3","series-title":"J Clin Neurosci","first-page":"780","article-title":"Dural metastases mimicking meningioma. Case report and review of the literature","volume":"11","author":"Laidlaw","year":"2004","unstructured":"Laidlaw JDKumar AChan A.Dural metastases mimicking meningioma. Case report and review of the literature. J Clin Neurosci. 2004;11(7):780-783. doi:10.1016\/j.jocn.2004.03.001"},{"issue":"2","key":"bib4","series-title":"J Cytol","first-page":"93","article-title":"Errors, limitations, and pitfalls in the diagnosis of central and peripheral nervous system lesions in intraoperative cytology and frozen sections","volume":"33","author":"Chand","year":"2016","unstructured":"Chand PAmit SGupta RAgarwal A.Errors, limitations, and pitfalls in the diagnosis of central and peripheral nervous system lesions in intraoperative cytology and frozen sections. J Cytol. 2016;33(2):93-97. doi:10.4103\/0970-9371.182530"},{"issue":"6","key":"bib5","series-title":"Neurol Med Chir (Tokyo)","first-page":"317","article-title":"Metastatic adenocarcinoma of the dura mimicking petroclival meningioma\u2014a case report","volume":"44","author":"Ohba","year":"2004","unstructured":"Ohba SKurokawa RYoshida KKawase T.Metastatic adenocarcinoma of the dura mimicking petroclival meningioma\u2014a case report. Neurol Med Chir (Tokyo). 2004;44(6):317-320. doi:10.2176\/nmc.44.317"},{"issue":"1","key":"bib6","series-title":"J Neurooncol","first-page":"57","article-title":"Dural metastases","volume":"75","author":"Laigle-Donadey","year":"2005","unstructured":"Laigle-Donadey FTaillibert SMokhtari KHildebrand JDelattre JY.Dural metastases. J Neurooncol. 2005;75(1):57-61. doi:10.1007\/s11060-004-8098-1"},{"issue":"4","key":"bib7","series-title":"Radiol Case Rep","first-page":"1452","article-title":"Small-cell lung \u00adcancer metastasis to a meningioma: case report and review of the literature","volume":"18","author":"Georgiou","year":"2023","unstructured":"Georgiou LAWright JHMarkel TOSims PJ.Small-cell lung \u00adcancer metastasis to a meningioma: case report and review of the literature. Radiol Case Rep. 2023;18(4):1452-1456. doi:10.1016\/j.radcr.2023.01.040"},{"issue":"11","key":"bib8","series-title":"Int J Clin Exp Pathol","first-page":"2625","article-title":"Metastasis of lung adenosquamous carcinoma to meningioma: case report with literature review","volume":"6","author":"Glass","year":"2013","unstructured":"Glass RHukku SRGershenhorn BAlzate JTan B.Metastasis of lung adenosquamous carcinoma to meningioma: case report with literature review. Int J Clin Exp Pathol. 2013;6(11):2625-2630."},{"issue":"4","key":"bib9","series-title":"J Lab Physicians","first-page":"384","article-title":"An audit of diagnostic disparity between intraoperative frozen section diagnosis and final histopathological diagnosis of central nervous system lesions at a tertiary care center","volume":"14","author":"Yadav","year":"2022","unstructured":"Yadav MSharma PSingh VTewari RMishra PSRoy K.An audit of diagnostic disparity between intraoperative frozen section diagnosis and final histopathological diagnosis of central nervous system lesions at a tertiary care center. 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