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Introduction. Cranial surgery in geriatric patients

Mark G. Hamilton, Ian Parney, Odette A. Harris, Eric A. Schmidt, and Howard A. Riina

in patients with idiopathic normal pressure hydrocephalus. Lastly, Raygor et al. report their experience with surgical management of trigeminal neuralgia. The quality of the papers in this issue is outstanding, and we hope that you will both enjoy and be enlightened by the journey they offer. Disclosures Dr. Schmidt reports receiving clinical or research support from SOPHYSA.

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Jacques Jean Lhermitte and the syndrome of peduncular hallucinosis

Jennifer A. Kosty, Juan Mejia-Munne, Rimal Dossani, Amey Savardekar, and Bharat Guthikonda

26548431 10.1007/s12098-015-1935-8 3 Boller F : Modern neuropsychology in France: Jean Lhermitte (1877–1959) . Cortex 41 : 740 – 741 , 2005 10.1016/S0010-9452(08)70292-2 4 Chen HJ , Lui CC : Peduncular hallucinosis following microvascular decompression for trigeminal neuralgia: report of a case . J Formos Med Assoc 94 : 503 – 505 , 1995 7549581 5 Chu DT , Hautecoeur P , Santoro JD : Jacques Jean Lhermitte and Lhermitte’s sign . Mult Scler 20 : 1352458518820628 , 2018 6 Couse M , Wojtanowicz T , Comeau S , Bota R : Peduncular

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Postoperative imaging of vestibular schwannomas

Daniel T. Ginat and Robert L. Martuza

stimuli, CSF leak along the course of the wire, and nonauditory stimuli, such as trigeminal neuralgia. 19 F ig . 17. Auditory brainstem implant. A: Scout image showing the components of the device, including the receiver stimulator (arrow) , stimulator electrode (white arrowhead) , and grounding electrode (black arrowhead) . B and C: Axial CT images in the bone (B) and soft-tissue (C) windows showing that the electrode (arrows) produces considerable streak artifact, which makes precise localization difficult. D: The position of the electrode (arrow

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Herpes simplex reactivation following neurosurgery: case report and review of the literature

Diane C. McLaughlin, Rebecca L. Achey, Robert Geertman, and Jonah Grossman

Nl Nl 89 70 26 Neg Dead POD 19 Nl 94 38 35 50 mono HSV-1 Tang et al., 2013 Rt MVD for trigeminal neuralgia 29 Fever, HA, confusion HSV-1 Alive Uda et al., 2013 MTLE 20 11 HSV Alive Vik-Mo et al., 2014 MTLE 25 3 HA, lethargy, confusion/day 11 fever HSV-2 Alive POD 8 40 208 1651 62 35 Not tested Present study Psammomatous meningioma (WHO grade I) 72 6 HA POD 13 42 343 362 44 55 HSV-1 Alive POD 19 53 308 12 94 6 Not retested AH = amygdalohippocampectomy; aLOC = altered LOC; CM-1 = Chiari malformation type 1; erythro = erythrocyte; EVD = external ventricular drain; GBM

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Novel technique for trialing peripheral nerve stimulation: ultrasonography-guided StimuCath trial

Chandan G. Reddy, Oliver E. Flouty, Marshall T. Holland, Leigh A. Rettenmaier, Mario Zanaty, and Foad Elahi

) 8 51 F Insidious w/no antecedent trauma Bilat chronic occipital neuralgia 2.0 60 100% Bilat occipital nerves 9 52 M Hernia surgery w/sub-sequent neurectomy Lt post-herniorrhaphy pain 5.0 60 100% Lt iliohypogastric & ilioinguinal nerves 10 53 M Insidious w/no antecedent trauma Lt atypical trigeminal neuralgia 1.8 60 75% Lt great auricular nerve 11 47 F Insidious w/no antecedent trauma Rt chronic migraine headache 5.6 10 100% Rt great auricular nerve 12 65 M Bilat microvascular

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Machine learning predictive models in neurosurgery: an appraisal based on the TRIPOD guidelines. Systematic review

Anmol Warman, Anita L. Kalluri, and Tej D. Azad

diffusivity and symptom duration accurately predicts recurrence of trigeminal neuralgia after microvascular decompression: a pilot study and algorithm description" Accuracy: 85%; sensitivity: 0.83; specificity: 0.86 Della Pepa et al., 2021 29 "Machine learning-based prediction of early recurrence in glioblastoma patients: a glance towards precision medicine" AUC: 0.83 (train), 0.81 (test); accuracy: 83%, 80%; sensitivity: 0.78, 0.78; specificity: 0.87, 0.82; NPV: 0.79, 0.85; PPV: 0.85, 0.74 Porche et al., 2021 30 "Preoperative prediction of postoperative

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Evaluation of the effect of standard neuronavigation and augmented reality on the integrity of the perifocal structures during a neurosurgical approach

Alioucha Davidovic, Lara Chavaz, Torstein R. Meling, Karl Schaller, Philippe Bijlenga, and Julien Haemmerli

D-printed skull . Neurosurg Focus . 2021 ; 50 ( 1 ): E17 . 10.3171/2020.10.FOCUS20789 33386018 3 Jenkinson MD , Barone DG , Bryant A , Vale L , Bulbeck H , Lawrie TA , Intraoperative imaging technology to maximise extent of resection for glioma . Cochrane Database Syst Rev . 2018 ; 1 : CD012788 . 29355914 10.1093/ons/opz176 4 Legninda Sop FY , D’ Ercole M , Izzo A , Rapisarda A , Ioannoni E , Caricato A , The impact of neuronavigation on the surgical outcome of microvascular decompression for trigeminal neuralgia

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Initial experience with a robotically operated video optical telescopic-microscope in cranial neurosurgery: feasibility, safety, and clinical applications

Lior Gonen, Srikant S. Chakravarthi, Alejandro Monroy-Sosa, Juanita M. Celix, Nathaniel Kojis, Maharaj Singh, Jonathan Jennings, Melanie B. Fukui, Richard A. Rovin, and Amin B. Kassam

microsurgical skills that are required to perform Category II procedures would be greater than those for an ICH. 2) Extraaxial lesions w/o skull base or venous sinuses involvement 2) Resection of convexity meningioma III 1) Intraaxial lesions in eloquent areas 1) Resection of glioma involving the lt frontal operculum The microsurgical skills of resecting a glioma in the left frontal operculum (Category III) would be the same as the right (Category II), but the eloquent location of the former results in a higher complexity. 2) MVD surgery 2) MVD for trigeminal neuralgia IV 1

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Building and implementing an institutional registry for a data-driven national neurosurgical practice: experience from a multisite medical center

Mohamad Bydon, Anshit Goyal, Aaron Biedermann, Allie J. Canoy Illies, Travis Paul, Abdul Karim Ghaith, Bernard Bendok, Alfredo Quiñones-Hinojosa, Robert J. Spinner, and Fredric B. Meyer

decompression All cases that did not fit into the above categories were marked miscellaneous. Examples include skull bone tumors and halo tractions. * Includes all burr holes, craniotomies, and/or decompressive craniectomies for traumatic or nontraumatic intracranial hematomas. † Includes all rhizotomies and microvascular decompressions for trigeminal neuralgia. The metrics included for visualization were case volumes, clinical outcomes (postoperative 30-day readmissions, complications, readmissions, returns to the operating room, length of

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Dural arteriovenous fistulas are not observed to convert to a higher grade after partial embolization

Erin Walker, Anja Srienc, Daphne Lew, Ridhima Guniganti, Giuseppe Lanzino, Waleed Brinjikji, Minako Hayakawa, Edgar A. Samaniego, Colin P. Derdeyn, Rose Du, Rosalind Lai, Jason P. Sheehan, Robert M. Starke, Adib Abla, Ahmed Abdelsalam, Bradley Gross, Felipe Albuquerque, Michael T. Lawton, Louis J. Kim, Michael Levitt, Sepideh Amin-Hanjani, Ali Alaraj, Ethan Winkler, W. Christopher Fox, Adam Polifka, Samuel Hall, Diederik Bulters, Andrew Durnford, Junichiro Satomi, Yoshiteru Tada, J. Marc C. van Dijk, Adriaan R. E. Potgieser, Ching-Jen Chen, Andrea Becerril-Gaitan, Joshua W. Osbun, and Gregory J. Zipfel

) Gait 1 (1) 1 (1) 0 (0) 0 (0) Other NHND 0 (0) 0 (0) 0 (0) 0 (0) Flow symptoms 72/130 (55) 87 (96) 107 (93) 0 (0) Headache 0/130 (0) 8/90 (9) 2 (2) 3 (75) Vision decrease 0/130 (0) 3/90 (3) 2 (2) 1 (25) Nausea/vomiting 1/130 (1) 1/90 (1) 0 (0) 0 (0) Chemosis 0/130 (0) 6/90 (7) 6 (5) 0 (0) Proptosis 0/130 (0) 6/90 (7) 2 (2) 0 (0) Diplopia 0/130 (0) 7/90 (8) 3 (3) 0 (0) Ophthalmoplegia 0/130 (0) 3/90 (3) 3 (3) 0 (0) Trigeminal