{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:01:59Z","timestamp":1782864119028,"version":"3.54.5"},"reference-count":12,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","license":[{"start":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T00:00:00Z","timestamp":1735689600000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,1]]},"abstract":"Brainstem tumors are bounded by a compact topography of eloquent tracts, cranial nerves, and nuclei. Reliable intraoperative neuromonitoring aids microneurosurgical technique to optimize safe resection. The authors present a case of motor mapping\u2013guided resection of a recurrent brainstem pilocytic astrocytoma. They demonstrate reliable and continuous responses from the corticospinal tract at the level of the midbrain to the pons with dynamic subcortical motor mapping using a monopolar stimulating suction. Contralateral limb and ipsilateral face muscles can be simultaneously detected and tumor resected until a threshold of less than 1 mA, corresponding to 1 mm or less from the corticospinal tracts.<\/jats:p>\n \n The video can be found here:\n https:\/\/stream.cadmore.media\/r10.3171\/2024.10.FOCVID24110<\/jats:ext-link>\n <\/jats:p>","DOI":"10.3171\/2024.10.focvid24110","type":"journal-article","created":{"date-parts":[[2025,1,1]],"date-time":"2025-01-01T01:13:49Z","timestamp":1735694029000},"page":"V2","source":"Crossref","is-referenced-by-count":1,"title":["Motor mapping\u2013guided resection of a brainstem recurrent pilocytic astrocytoma"],"prefix":"10.3171","volume":"12","author":[{"given":"Xiaopeng","family":"Guo","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, Brigham and Women\u2019s Hospital, Harvard Medical School, Boston, Massachusetts;"},{"name":"Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitali","family":"Bose","sequence":"additional","affiliation":[{"name":"SpecialtyCare Inc., Neuro Services, Brentwood, Tennessee"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Colin Patrick","family":"Galvin","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Brigham and Women\u2019s Hospital, Harvard Medical School, Boston, Massachusetts;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenya Linda","family":"Bi","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Brigham and Women\u2019s Hospital, Harvard Medical School, Boston, Massachusetts;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"issue":"1","key":"b1","series-title":"J Neurosurg","first-page":"104","article-title":"Microsurgical management of midbrain gliomas: surgical results and long-term outcome in a large, single-surgeon, consecutive series","volume":"140","author":"Serra C","year":"2023","unstructured":"Serra C, T\u00fcre H, F\u0131rat Z, Microsurgical management of midbrain gliomas: surgical results and long-term outcome in a large, single-surgeon, consecutive series. J Neurosurg. 2023;140(1):104\u2013115."},{"issue":"5","key":"b2","series-title":"J Neurosurg","first-page":"1015","article-title":"Continuous dynamic mapping of the corticospinal tract during surgery of motor eloquent brain tumors: evaluation of a new method","volume":"120","author":"Raabe A","year":"2014","unstructured":"Raabe A, Beck J, Schucht P, Seidel K. Continuous dynamic mapping of the corticospinal tract during surgery of motor eloquent brain tumors: evaluation of a new method. J Neurosurg. 2014;120(5):1015\u20131024."},{"issue":"2","key":"b3","series-title":"J Neurosurg","first-page":"287","article-title":"The warning-sign hierarchy between quantitative subcortical motor mapping and continuous motor evoked potential monitoring during resection of supratentorial brain tumors","volume":"118","author":"Seidel K","year":"2013","unstructured":"Seidel K, Beck J, Stieglitz L, Schucht P, Raabe A. The warning-sign hierarchy between quantitative subcortical motor mapping and continuous motor evoked potential monitoring during resection of supratentorial brain tumors. J Neurosurg. 2013;118(2):287\u2013296."},{"issue":"3","key":"b4","series-title":"J Neurosurg","first-page":"738","article-title":"Intraoperative mapping and monitoring of the corticospinal tracts with neurophysiological assessment and 3-dimensional ultrasonography-based navigation","volume":"114","author":"Nossek E","year":"2011","unstructured":"Nossek E, Korn A, Shahar T, Intraoperative mapping and monitoring of the corticospinal tracts with neurophysiological assessment and 3-dimensional ultrasonography-based navigation. J Neurosurg. 2011;114(3):738\u2013746."},{"key":"b5","series-title":"Adv Tech Stand Neurosurg","first-page":"21","article-title":"Brainstem surgery: functional surgical anatomy with the use of an advanced modern intraoperative neurophysiological procedure","volume":"48","author":"Morota N","year":"2023","unstructured":"Morota N, Deletis V. Brainstem surgery: functional surgical anatomy with the use of an advanced modern intraoperative neurophysiological procedure. Adv Tech Stand Neurosurg. 2023;48:21\u201355."},{"issue":"1","key":"b6","series-title":"Nat Med","first-page":"207","article-title":"The type II RAF inhibitor tovorafenib in relapsed\/refractory pediatric low-grade glioma: the phase 2 FIREFLY-1 trial","volume":"30","author":"Kilburn LB","year":"2024","unstructured":"Kilburn LB, Khuong-Quang DA, Hansford JR, The type II RAF inhibitor tovorafenib in relapsed\/refractory pediatric low-grade glioma: the phase 2 FIREFLY-1 trial. Nat Med. 2024;30(1):207\u2013217."},{"issue":"1","key":"b1","series-title":"J Neurosurg","first-page":"104","article-title":"Microsurgical management of midbrain gliomas: surgical results and long-term outcome in a large, single-surgeon, consecutive series","volume":"140","author":"Serra C","year":"2023","unstructured":"Serra C, T\u00fcre H, F\u0131rat Z, Microsurgical management of midbrain gliomas: surgical results and long-term outcome in a large, single-surgeon, consecutive series. J Neurosurg. 2023;140(1):104\u2013115."},{"issue":"5","key":"b2","series-title":"J Neurosurg","first-page":"1015","article-title":"Continuous dynamic mapping of the corticospinal tract during surgery of motor eloquent brain tumors: evaluation of a new method","volume":"120","author":"Raabe A","year":"2014","unstructured":"Raabe A, Beck J, Schucht P, Seidel K. Continuous dynamic mapping of the corticospinal tract during surgery of motor eloquent brain tumors: evaluation of a new method. 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