{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,26]],"date-time":"2026-02-26T12:32:46Z","timestamp":1772109166797,"version":"3.50.1"},"reference-count":50,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","license":[{"start":{"date-parts":[[2021,8,9]],"date-time":"2021-08-09T00:00:00Z","timestamp":1628467200000},"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":[],"published-print":{"date-parts":[[2021,8,9]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>Spinal bronchogenic cysts are rare nonneoplastic congenital variants of neurenteric cysts. The natural history and surgical management of these lesions are poorly understood.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBSERVATIONS<\/jats:title>\n                    <jats:p>A 25-year-old male presented with progressive back pain and bilateral lower limb sciatica of 6 months\u2019 duration. He had undergone subtotal resection of an intramedullary bronchogenic conus medullaris cyst 5 years prior. Magnetic resonance imaging revealed a recurrent bilobed intramedullary and extramedullary conus medullaris cystic lesion. The authors resected the lesion via a posterior approach with the aid of intraoperative neuromonitoring. Gross total resection was precluded by the tightly adherent nature of the cyst and the fact that stimulation of a residual intramedullary portion of the lesion evoked external anal sphincter responses.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>LESSONS<\/jats:title>\n                    <jats:p>This is the first reported case of a bilobed intramedullary and extramedullary bronchogenic cyst of the conus medullaris. This unique case lends insight into the poorly defined embryogenesis of bronchogenic cysts by favoring the split notochord syndrome theory rather than the ectopic ectoderm proposal. The importance of neuromonitoring when resecting these tightly adherent lesions is demonstrated. Finally, although the secretory nature of these lesions portends a tendency for cyst reaccumulation, it is imperative to recognize that this is usually a slow process.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3171\/case21323","type":"journal-article","created":{"date-parts":[[2021,8,9]],"date-time":"2021-08-09T03:03:38Z","timestamp":1628478218000},"source":"Crossref","is-referenced-by-count":1,"title":["Bilobed intramedullary and extramedullary bronchogenic cyst of the conus medullaris: illustrative case"],"prefix":"10.3171","volume":"2","author":[{"given":"Barry Ting Sheen","family":"Kweh","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"National Trauma Research Institute, Melbourne, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samuel","family":"Roberts-Thomson","sequence":"additional","affiliation":[{"name":"Anatomical Pathology, Royal Melbourne Hospital, Parkville, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Verhellen","sequence":"additional","affiliation":[{"name":"Neurophysiology Services Australia, New South Wales, Australia; and"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Girish","family":"Nair","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery and"},{"name":"Department of Surgery, University of Melbourne, Parkville, Victoria, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"key":"b1","series-title":"World Neurosurg.","doi-asserted-by":"publisher","first-page":"621.e7","DOI":"10.1016\/j.wneu.2016.08.003","article-title":"Intramedullary and extramedullary cervical neurenteric cyst requiring fixation and fusion","volume":"95","author":"Bruzek \nAK","year":"2016","unstructured":"Bruzek \nAK, \nKucia \nEJ, \nOppenlander \nME\n. \nIntramedullary and extramedullary cervical neurenteric cyst requiring fixation and fusion. \nWorld Neurosurg. \n2016;\n95:\n621.e7\u2013\n621.e12.\n10.1016\/j.wneu.2016.08.00330519518"},{"issue":"49","key":"b2","series-title":"Medicine (Baltimore).","doi-asserted-by":"publisher","first-page":"e2039","DOI":"10.1097\/MD.0000000000002039","article-title":"Case report series and review of rare intradural extramedullary neoplasms \u2013 bronchiogenic cysts","volume":"94","author":"Chen \nJ","year":"2015","unstructured":"Chen \nJ, \nLai \nR, \nLi \nZ, \net\u00a0al.\n \nCase report series and review of rare intradural extramedullary neoplasms \u2013 bronchiogenic cysts. \nMedicine (Baltimore). \n2015;\n94(\n49):\ne2039.\n10.1097\/MD.000000000000203911302637"},{"issue":"4","key":"b3","series-title":"Asian J Neurosurg.","doi-asserted-by":"publisher","first-page":"715","DOI":"10.4103\/ajns.AJNS_92_14","article-title":"A rare case of isolated conus medullaris neurenteric cyst","volume":"12","author":"Aiyappan \nSK","year":"2017","unstructured":"Aiyappan \nSK, \nThirupathi Rajan \nVT, \nHarikrishnan \nV\n. \nA rare case of isolated conus medullaris neurenteric cyst. \nAsian J Neurosurg. \n2017;\n12(\n4):\n715\u2013\n717.\n10.4103\/ajns.AJNS_92_14"},{"issue":"2","key":"b4","series-title":"Childs Nerv Syst.","doi-asserted-by":"publisher","first-page":"247","DOI":"10.1007\/s00381-009-1020-6","article-title":"Intraoperative neurophysiology of the conus medullaris and cauda equina","volume":"26","author":"Kothbauer \nKF","year":"2010","unstructured":"Kothbauer \nKF, \nDeletis \nV\n. \nIntraoperative neurophysiology of the conus medullaris and cauda equina. \nChilds Nerv Syst. \n2010;\n26(\n2):\n247\u2013\n253.\n10.1007\/s00381-009-1020-626097578"},{"issue":"9","key":"b5","series-title":"Cureus.","first-page":"e3379","article-title":"Comprehensive review of spinal neurenteric cysts with a focus on histopathological findings","volume":"10","author":"Baek \nWK","year":"2018","unstructured":"Baek \nWK, \nLachkar \nS, \nIwanaga \nJ, \net\u00a0al.\n \nComprehensive review of spinal neurenteric cysts with a focus on histopathological findings. \nCureus. \n2018;\n10(\n9):\ne3379.\n22980423"},{"key":"b6","series-title":"J Neurosurg.","first-page":"305","article-title":"Intramedullary neurenteric cysts of the spine. 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