{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T14:59:21Z","timestamp":1761058761401},"reference-count":19,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2006,2]]},"abstract":"<jats:p>\u2713The authors present clinical, imaging, and histological features of two adult patients found to harbor a conventional schwannoma contiguous with a deep plexiform schwannoma. One patient had neurofibromatosis (NF) Type 2 (NF2), and both intracranial (bilateral oculomotor, trigeminal, acoustic, and hypoglossal schwannomas as well as meningiomas) and intraspinal (schwannomas and meningiomas) lesions. The proximal forearm lesions consisted of a conventional schwannoma and an underlying plexiform component. The second patient, who did not have NF2, presented with a similar enlarging mass in the distal arm; two contiguous lesions were resected. Both patients exhibited distinct, readily identifiable, magnetic resonance imaging features. Plexiform schwannomas are rare lesions that occur sporadically or, on occasion, in association with NF2 or meningiomas with or without multiple schwannomas. The authors believe that a more careful examination of patients with NF2 may show that these people have a higher incidence of plexiform schwannoma than previously thought. Pathological confirmation is crucial in distinguishing plexiform schwannomas from plexiform neurofibromas, because the latter are directly associated with NF1 and have a significant tendency to undergo malignant transformation. To the best of the authors\u2019 knowledge, this is the first report of a conventional schwannoma contiguous with a deep plexiform schwannoma.<\/jats:p>","DOI":"10.3171\/jns.2006.104.2.319","type":"journal-article","created":{"date-parts":[[2008,1,24]],"date-time":"2008-01-24T12:31:37Z","timestamp":1201177897000},"page":"319-324","source":"Crossref","is-referenced-by-count":9,"title":["Contiguous conventional and plexiform schwannomas"],"prefix":"10.3171","volume":"104","author":[{"given":"J. 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