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Definition of essay

 (Entry 1 of 2)

Definition of essay  (Entry 2 of 2)

transitive verb

• composition

attempt , try , endeavor , essay , strive mean to make an effort to accomplish an end.

attempt stresses the initiation or beginning of an effort.

try is often close to attempt but may stress effort or experiment made in the hope of testing or proving something.

endeavor heightens the implications of exertion and difficulty.

essay implies difficulty but also suggests tentative trying or experimenting.

strive implies great exertion against great difficulty and specifically suggests persistent effort.

Examples of essay in a Sentence

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'essay.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Middle French essai , ultimately from Late Latin exagium act of weighing, from Latin ex- + agere to drive — more at agent

14th century, in the meaning defined at sense 4

14th century, in the meaning defined at sense 2

Phrases Containing essay

• essay question
• photo - essay

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To 'Essay' or 'Assay'?

You'll know the difference if you give it the old college essay

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Cite this entry.

“Essay.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/essay. Accessed 13 May. 2024.

Kids Definition

Kids definition of essay.

Kids Definition of essay  (Entry 2 of 2)

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Britannica English: Translation of essay for Arabic Speakers

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• UTHealth Houston

Walid Ibn Essayed, MD

• Assistant Professor
• Education & Training

Areas of Interest

Publications.

Dr. Walid Ibn Essayed is an assistant professor in Neurosurgery at McGovern Medical School at UTHealth. Dr Ibn Essayed completed his training at Brigham and Women’s Hospital/Harvard Medical School and has a special interest in brain tumors and skull base surgery. He received his medical degree at the Faculté de Médecine de Tunis in Tunisia. During his neurosurgical training, he completed a research fellowship in open skull base and endoscopic endonasal skull base surgery at New York-Presbyterian/Weill Cornell Medical Center in New York City and a clinical fellowship in skull base surgery at the Hôpital de la Pitié-Salpêtrière in Paris, France. He also completed a clinical fellowship in image-guided neurosurgery and a clinical fellowship in skull base surgery at Brigham and Women’s Hospital/Harvard Medical School.

While at Brigham and Women’s Hospital, he sought ways to improve the practice of neurosurgery, working on multiple patented devices to advance the specialty. He is an author of numerous articles in peer-reviewed publications, reviews, and chapters, including Nature Communications, Journal of Neurosurgery, Operative Neurosurgery, World Neurosurgery, PLOS One, and Journal of Neuro-Oncology. His current research interests are neuro-oncology, brain tumors, spine tumors, neuro-anatomy, skull base and cerebrovascular surgery, multimodal imaging, and the development of new technologies and innovations in neurosurgery.

Dr. Ibn Essayed treats cranial and spinal neurosurgical conditions, including both elective and emergent cases. He speaks English, French, Arabic, Italian, and Japanese.

Research Interests

His current research interests are neuro-oncology, brain tumors, spine tumors, neuro-anatomy, skull base and cerebrovascular surgery, multimodal imaging, and the development of new technologies and innovations in neurosurgery.

Updated list of Articles and Chapter

Peer reviewed publications.

1. Essayed WI, Bernard A, Kalamarides M. Clinical response associated with radiographic regression of a cervicomedullary ependymoma in a NF2 patient treated by bevacizumab. J Neurooncol. Nov 2015;125(2):445-6. doi:10.1007/s11060-015-1925-8 2. Singh H, Essayed WI, Cohen-Gadol A, Zada G, Schwartz TH. Resection of pituitary tumors: endoscopic versus microscopic. J Neurooncol. Nov 2016;130(2):309-317. doi:10.1007/s11060-016-2124-y 3. Esquenazi Y, Essayed WI, Singh H, Mauer E, Ahmed M, Christos PJ, Schwartz TH. Endoscopic Endonasal Versus Microscopic Transsphenoidal Surgery for Recurrent and/or Residual Pituitary Adenomas. World Neurosurg. May 2017;101:186-195. doi:10.1016/j.wneu.2017.01.110 4. Essayed WI, Singh H, Lapadula G, Almodovar-Mercado GJ, Anand VK, Schwartz TH. Endoscopic endonasal approach to the ventral brainstem: anatomical feasibility and surgical limitations. J Neurosurg. Nov 2017;127(5):1139-1146. doi:10.3171/2016.9.JNS161503 5. Essayed WI, Zhang F, Unadkat P, Cosgrove GR, Golby AJ, O’Donnell LJ. White matter tractography for neurosurgical planning: A topography-based review of the current state of the art. Neuroimage Clin. 2017;15:659-672. doi:10.1016/j.nicl.2017.06.011 6. Norton I, Essayed W, Zhang F, Pujol S, Yarmarkovich A, Golby AJ, Kindlmann G, Wassermann D, Estepar RSJ, Rathi Y, Pieper S, Kikinis R, Johnson HJ, Westin CF, O’Donnell LJ. SlicerDMRI: Open Source Diffusion MRI Software for Brain Cancer Research. Cancer Res. Nov 1 2017;77(21):e101-e103. doi:10.1158/0008-5472.CAN-17-0332 7. O’Donnell LJ, Suter Y, Rigolo L, Kahali P, Zhang F, Norton I, Albi A, Olubiyi O, Meola A, Essayed WI, Unadkat P, Ciris PA, Wells WM, 3rd, Rathi Y, Westin CF, Golby AJ. Automated white matter fiber tract identification in patients with brain tumors. Neuroimage Clin. 2017;13:138-153. doi:10.1016/j.nicl.2016.11.023 8. Singh H, Essayed WI, Deb S, Hoffman C, Schwartz TH. Minimally Invasive Robotic Laser Corpus Callosotomy: A Proof of Concept. Cureus. Feb 10 2017;9(2):e1021. doi:10.7759/cureus.1021 9. Singh H, Essayed WI, Jada A, Moussazadeh N, Dhandapani S, Rote S, Schwartz TH. Contralateral supraorbital keyhole approach to medial optic nerve lesions: an anatomoclinical study. J Neurosurg. Mar 2017;126(3):940-944. doi:10.3171/2016.3.JNS1634 10. Albi A, Meola A, Zhang F, Kahali P, Rigolo L, Tax CMW, Ciris PA, Essayed WI, Unadkat P, Norton I, Rathi Y, Olubiyi O, Golby AJ, O’Donnell LJ. Image Registration to Compensate for EPI Distortion in Patients with Brain Tumors: An Evaluation of Tract-Specific Effects. J Neuroimaging. Mar 2018;28(2):173-182. doi:10.1111/jon.12485 11. Essayed WI, Unadkat P, Hosny A, Frisken S, Rassi MS, Mukundan S, Weaver JC, Al-Mefty O, Golby AJ, Dunn IF. 3D printing and intraoperative neuronavigation tailoring for skull base reconstruction after extended endoscopic endonasal surgery: proof of concept. J Neurosurg. Mar 2 2018;130(1):248-255. doi:10.3171/2017.9.JNS171253 12. Gong S, Zhang F, Norton I, Essayed WI, Unadkat P, Rigolo L, Pasternak O, Rathi Y, Hou L, Golby AJ, O’Donnell LJ. Free water modeling of peritumoral edema using multi-fiber tractography: Application to tracking the arcuate fasciculus for neurosurgical planning. PLoS One. 2018;13(5):e0197056. doi:10.1371/journal.pone.0197056 13. Harary M, Essayed WI, Valdes PA, McDannold N, Cosgrove GR. Volumetric analysis of magnetic resonance-guided focused ultrasound thalamotomy lesions. Neurosurg Focus. Feb 2018;44(2):E6. doi:10.3171/2017.11.FOCUS17587 14. Kalamarides M, Essayed W, Lejeune JP, Aboukais R, Sterkers O, Bernardeschi D, Peyre M, Lloyd SK, Freeman S, Hammerbeck-Ward C, Kellett M, Rutherford SA, Evans DG, Pathmanaban O, King AT. Spinal ependymomas in NF2: a surgical disease? J Neurooncol. Feb 2018;136(3):605-611. doi:10.1007/s11060-017-2690-7 15. Machado I, Toews M, Luo J, Unadkat P, Essayed W, George E, Teodoro P, Carvalho H, Martins J, Golland P, Pieper S, Frisken S, Golby A, Wells W, 3rd. Non-rigid registration of 3D ultrasound for neurosurgery using automatic feature detection and matching. Int J Comput Assist Radiol Surg. Oct 2018;13(10):1525-1538. doi:10.1007/s11548-018-1786-7 16. Silva MA, See AP, Essayed WI, Golby AJ, Tie Y. Challenges and techniques for presurgical brain mapping with functional MRI. Neuroimage Clin. 2018;17:794-803. doi:10.1016/j.nicl.2017.12.008 17. Singh H, Rote S, Jada A, Bander ED, Almodovar-Mercado GJ, Essayed WI, Hartl R, Anand VK, Schwartz TH, Greenfield JP. Endoscopic endonasal odontoid resection with real-time intraoperative image-guided computed tomography: report of 4 cases. J Neurosurg. May 2018;128(5):1486-1491. doi:10.3171/2017.1.JNS162601 18. Lofrese G, Cultrera F, Visani J, Nicassio N, Essayed W, Donati R, Cavallo MA, De Bonis P. Intraoperative Doppler ultrasound as a means of preventing vertebral artery injury during Goel and Harms C1-C2 posterior arthrodesis: technical note. J Neurosurg Spine. Aug 16 2019:1-7. doi:10.3171/2019.5.SPINE1959 19. Lofrese G, Musio A, De Iure F, Cultrera F, Martucci A, Iaccarino C, Essayed W, Ghadirpour R, Servadei F, Cavallo MA, De Bonis P. Type II odontoid fracture in elderly patients treated conservatively: is fracture healing the goal? Eur Spine J. May 2019;28(5):1064-1071. doi:10.1007/s00586-019-05898-2 20. Machado I, Toews M, George E, Unadkat P, Essayed W, Luo J, Teodoro P, Carvalho H, Martins J, Golland P, Pieper S, Frisken S, Golby A, Wells Iii W, Ou Y. Deformable MRI-Ultrasound registration using correlation-based attribute matching for brain shift correction: Accuracy and generality in multi-site data. Neuroimage. Nov 15 2019;202:116094. doi:10.1016/j.neuroimage.2019.116094 21. Rosenblum JS, Neto M, Essayed WI, Bi WL, Patel NJ, Aziz-Sultan MA, Heiss JD, Al-Mefty O. Tentorial Venous Anatomy: Cadaveric and Radiographic Study with Discussion of Origin and Surgical Significance. World Neurosurg. Nov 2019;131:e38-e45. doi:10.1016/j.wneu.2019.06.232 22. Bernstock JD, Olsen HE, Segar D, Huang K, Kappel AD, Essayed W, Pearl PL, Madsen JR. Corpus Callosotomy for Refractory Epilepsy in Aicardi Syndrome: Case Report and Focused Review of the Literature. World Neurosurg. Oct 2020;142:450-455. doi:10.1016/j.wneu.2020.06.230 23. Chandra A, Brandel MG, Wadhwa H, Almeida ND, Yue JK, Nuru MO, Cheng J, Lu S, Patel A, Essayed W, McDermott MW, Berger MS, Aghi MK. The Path to U.S. Neurosurgical Residency for Foreign Medical Graduates: Trends from a Decade 2007-2017. World Neurosurg. May 2020;137:e584-e596. doi:10.1016/j.wneu.2020.02.069 24. Leung LWL, Unadkat P, Bertotti MM, Bi WL, Essayed W, Bunevicius A, Chavakula V, Rigolo L, Fumagalli L, Tie Z, Golby AJ, Tie Y. Clinical Utility of Preoperative Bilingual Language fMRI Mapping in Patients with Brain Tumors. J Neuroimaging. Mar 2020;30(2):175-183. doi:10.1111/jon.12690 25. Rigolo L, Essayed W, Tie Y, Norton I, Mukundan S, Jr., Golby A. Intraoperative Use of Functional MRI for Surgical Decision Making after Limited or Infeasible Electrocortical Stimulation Mapping. J Neuroimaging. Mar 2020;30(2):184-191. doi:10.1111/jon.12683 26. Singh H, Essayed WI, Schwartz TH. Endoscopic technology and repair techniques. Handb Clin Neurol. 2020;170:217-225. doi:10.1016/B978-0-12-822198-3.00042-2 27. Aboud E, Essayed W, Al-Mefty O. Two-Stage Double Petrosal Approach for the Total Resection of Petroclival-Cavernous Meningioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 15 2021;21(1):E30-E31. doi:10.1093/ons/opab049 28. Aboud E, Tamer WA, Ibn Essayed W, Al-Mefty O. Resection of Giant Invasive Parasagittal Atypical Meningioma With a Venous Graft Reconstruction of the Sagittal Sinus: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Sep 15 2021;21(4):E332-E333. doi:10.1093/ons/opab232 29. Almefty KK, Bi WL, Ibn Essayed W, Al-Mefty O. Resection of a Dumbbell-Shaped Facial Nerve Schwannoma With Preservation of Facial Nerve Function Through the Extended Middle Fossa Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E530-e531. doi:10.1093/ons/opab335 30. Almefty RO, Essayed W, Al-Mefty O. Medial Acoustic Tumors: Special Considerations: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jul 15 2021;21(2):E101-E102. doi:10.1093/ons/opab129 31. Almefty RO, Ibn Essayed W, Al-Mefty O. “Save the Nerve”: Technical Nuances for Hearing Preservation and Restoration in Vestibular Schwannoma Surgery: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Sep 15 2021;21(4):E328-E329. doi:10.1093/ons/opab230 32. Almefty RO, Ibn Essayed W, Al-Mefty O. Clipping of Multiple Cerebral Aneurysms Through Cranioorbital Zygomatic Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E522-E523. doi:10.1093/ons/opab320 33. Aversa A, Essayed W, Al-Mefty O. Total Petrosectomy for the Total Resection of Sphenopetroclival Meningioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 15 2021;21(1):E22-E23. doi:10.1093/ons/opab089 34. Bulsara KR, Ibn Essayed W, Aboud E, Al-Mefty O. Diaphragm Sellae Meningioma: Distinct Clinical, Anatomic, and Surgical Considerations: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Sep 15 2021;21(4):E336-E337. doi:10.1093/ons/opab234 35. Chua MMJ, Gupta S, Essayed W, Donnelly DJ, Ziayee H, Vicenty-Padilla J, Das AS, Lai RPM, Izzy S, Aziz-Sultan MA. Endovascular treatment of a ruptured posterior fossa pure arterial malformation: illustrative case. J Neurosurg Case Lessons. Jan 11 2021;1(2):CASE2073. doi:10.3171/CASE2073 36. Eisenberg M, Ibn Essayed W, Al-Mefty O. Extirpation of Recurrent Petrous Apex Cholesterol Granuloma Through the Zygomatic Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Aug 16 2021;21(3):E229-E230. doi:10.1093/ons/opab156 37. Essayed W, Aboud E, Al-Mefty O. Pineal Region Hemangioblastoma Resection Through Paramedian Supracerebellar Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 15 2021;21(1):E34-E35. doi:10.1093/ons/opab104 38. Essayed W, Aboud E, Al-Mefty O. Foramen Magnum Meningioma-The Attainment of the Intra-Arachnoidal Dissection: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E518-E519. doi:10.1093/ons/opab317 39. Essayed W, Al-Mefty O. Endoscopic-Assisted Keyhole Resection of a Recurrent Epidermoid Tumor: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 15 2021;21(1):E32-E33. doi:10.1093/ons/opab098 40. Essayed W, Mooney MA, Al-Mefty O. Transcavernous Resection of an Upper Clival Chondrosarcoma: “Cavernous Sinus as a Route”: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). May 13 2021;20(6):E422-E423. doi:10.1093/ons/opab043 41. Essayed W, Mooney MA, Al-Mefty O. Venous Anatomy Influence on the Approach Selection of a Petroclival Clear Cell Meningioma With Associated Multiple Spinal Meningiomas: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). May 13 2021;20(6):E426-E427. doi:10.1093/ons/opab072 42. Ibn Essayed W, Aboud E, Al-Mefty O. Interposition Grafting of the Facial Nerve After Resection of a Large Facial Nerve Schwannoma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Sep 15 2021;21(4):E340-E341. doi:10.1093/ons/opab240 43. Ibn Essayed W, Aboud E, Al-Mefty O. Combined Microscopic-Endoscopic Transmastoid Resection of a Petrous Meningioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E528-E529. doi:10.1093/ons/opab340 44. Ibn Essayed W, Al-Mefty O. Metachronous Skull Base Paraganglioma Surgical Management: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Oct 13 2021;21(5):E427-E428. doi:10.1093/ons/opab268 45. Ibn Essayed W, Al-Mefty O. Transcondylar Odontoid Resection and Stabilization for Craniovertebral Degenerative Compression: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Oct 13 2021;21(5):E429-E430. doi:10.1093/ons/opab269 46. Ibn Essayed W, Al-Mefty O. Resection of a Medulla Oblongata Hemangioblastoma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Oct 13 2021;21(5):E435. doi:10.1093/ons/opab278 47. Ibn Essayed W, Al-Mefty O. Giant Ossified Clival Chondrosarcoma Resection: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E526-E527. doi:10.1093/ons/opab336 48. Ibn Essayed W, Almefty KK, Al-Mefty O. Recurrent Chordoma Resection in the Advanced Multimodality Image Guided Operating Suite: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Apr 15 2021;20(5):E344-E345. doi:10.1093/ons/opaa445 49. Ibn Essayed W, Tavanaiepour D, Abolfotoh M, Al-Mefty O. Microsurgical Resection of a Parasellar Meningioma Invading the Cavernous Sinus, Bone, and Optic Canal: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E520-E521. doi:10.1093/ons/opab337 50. Kadri PAS, Arnautović KI, Ibn Essayed W, Al-Mefty O. Resection of Clival Chordoma Through the Anterior Clivectomy: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Nov 15 2021;21(6):E516-e517. doi:10.1093/ons/opab334 51. Kadri PAS, Essayed W, Al-Mefty O. Resection of Pontine Cavernoma Through the Anterior Transpetrosal Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 15 2021;21(1):E26-E27. doi:10.1093/ons/opab103 52. Kadri PAS, Ibn Essayed W, Al-Mefty O. The Resection of a Thalamic Pilocytic Astrocytoma Through the Transchoroidal Fissure, Transcallosal Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Apr 15 2021;20(5):E346-E347. doi:10.1093/ons/opab015 53. Miller LE, Mohan S, Essayed WI, Sukumaran M, Mirshahi S, Rabinov JD, Du R, Rettig EM. Embolization of the internal maxillary artery via open retrograde superficial temporal artery approach. J Surg Case Rep. Nov 2021;2021(11):rjab508. doi:10.1093/jscr/rjab508 54. Mooney MA, Ibn Essayed W, Al-Mefty O. Nuances of Olfactory Groove Meningioma Surgery: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Sep 15 2021;21(4):E338-E339. doi:10.1093/ons/opab233 55. Mooney MA, Ibn Essayed W, Al-Mefty O. Simpson Grade I Removal of Tuberculum Sella Meningioma Through the Supraorbital Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jul 15 2021;21(2):E103-E104. doi:10.1093/ons/opab133 56. Mooney MA, Ibn Essayed W, Aziz-Sultan MA, Al-Mefty O. Concomitant Embolization and Microsurgical Resection of a Giant, Hypervascular Skull Base Meningioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jul 15 2021;21(2):E97-E98. doi:10.1093/ons/opab128 57. Pojskic M, Arnautovic KI, Ibn Essayed W, Al-Mefty O. A Combined Microsurgical and Endovascular Approach to Giant Paraclinoid Aneurysm: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). May 13 2021;20(6):E424-E425. doi:10.1093/ons/opab059 58. Tavanaiepour D, Abolfotoh M, Essayed W, Al-Mefty O. Radical Resection of a Giant Epidermoid Tumor Associated With Miniature Chordoma Utilizing a Combined Endoscopic-Microscopic Technique: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jul 15 2021;21(2):E95-E96. doi:10.1093/ons/opab130 59. Wu K, Bi WL, Essayed W, Patel V, Kadri P, Al-Mefty O. Integration of Microanatomy, Neuronavigation, Dynamic Neurophysiologic Monitoring, and Intraoperative Multimodality Imaging for the Safe Removal of an Insular Glioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 15 2021;21(1):E28-E29. doi:10.1093/ons/opab050 60. Almefty KK, Mooney MA, Al-Mefty O, Essayed W, Bi WL, Cai L, Kadri PAS. Intracranial Facial Schwannomas: Multiple Distinct Entities Necessitating Tailored Management. World Neurosurg. Dec 2022;168:e187-e195. doi:10.1016/j.wneu.2022.09.082 61. Aversa A, Essayed W, Al-Mefty O. Surgical Presets of Ruptured Dermoid Cyst Resection: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). May 1 2022;22(5):e217. doi:10.1227/ons.0000000000000142 62. Aversa A, Ibn Essayed W, Al-Mefty O. Resection of Skull Base Meningioma With Extensive Extracranial Extension: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jul 1 2022;23(1):e51. doi:10.1227/ons.0000000000000220 63. Bernstock JD, Gary SE, Klinger N, Valdes PA, Ibn Essayed W, Olsen HE, Chagoya G, Elsayed G, Yamashita D, Schuss P, Gessler FA, Paolo Peruzzi P, Bag AK, Friedman GK. Standard clinical approaches and emerging modalities for glioblastoma imaging. Neurooncol Adv. Jan-Dec 2022;4(1):vdac080. doi:10.1093/noajnl/vdac080 64. Bernstock JD, Hoffman SE, Kappel AD, Valdes PA, Essayed W, Klinger NV, Kang KD, Totsch SK, Olsen HE, Schlappi CW, Filipski K, Gessler FA, Baird L, Filbin MG, Hashizume R, Becher OJ, Friedman GK. Immunotherapy approaches for the treatment of diffuse midline gliomas. Oncoimmunology. 2022/12/31 2022;11(1):2124058. doi:10.1080/2162402X.2022.2124058 65. Bhere D, Choi SH, van de Donk P, Hope D, Gortzak K, Kunnummal A, Khalsa J, Revai Lechtich E, Reinshagen C, Leon V, Nissar N, Bi WL, Feng C, Li H, Zhang YS, Liang SH, Vasdev N, Essayed W, Quevedo PV, Golby A, Banouni N, Palagina A, Abdi R, Fury B, Smirnakis S, Lowe A, Reeve B, Hiller A, Chiocca EA, Prestwich G, Wakimoto H, Bauer G, Shah K. Target receptor identification and subsequent treatment of resected brain tumors with encapsulated and engineered allogeneic stem cells. Nat Commun. May 19 2022;13(1):2810. doi:10.1038/s41467-022-30558-3 66. Emerson SN, Ibn-Essayed W, Al-Mefty O. Cavernous Hemangioma of the Cavernous Sinus-Same Pathology, Different Disease: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 1 2022;22(6):e265-e266. doi:10.1227/ons.0000000000000180 67. Essayed W, Aboud E, Adada B, Al-Mefty O. Clival Meningioma: Remove the Bone to Pursue Ventral Exposure: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Mar 1 2022;22(3):e129. doi:10.1227/ONS.0000000000000108 68. Essayed W, Aboud E, Al-Mefty O. Hyperostotic Invasive Meningioma of the Sphenoid Ridge Surgical Considerations: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Mar 1 2022;22(3):e124-e125. doi:10.1227/ONS.0000000000000074 69. Essayed W, Al-Mefty O. Orbital Cavernous Venous Malformation Resection Through Supraorbital Craniotomy: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Mar 1 2022;22(3):e128. doi:10.1227/ONS.0000000000000100 70. Essayed W, Borba LAB, Al-Mefty O. Simultaneous Endoscopic-Microscopic Skull Base Approach for the Resection of a Dumbbell-Shaped Hypoglossal Schwannoma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Oct 1 2022;23(4):e283. doi:10.1227/ons.0000000000000329 71. Essayed W, Haddad GF, Al-Mefty O. Anterior Petrosal: A Key Approach to Upper Petroclival Meningiomas: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Feb 1 2022;22(2):e81. doi:10.1227/ONS.0000000000000046 72. Essayed W, Harrison MJ, Aboud E, Al-Mefty O. Brainstem Pilocytic Astrocytoma, a Surgical Disease: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jun 1 2022;22(6):e264. doi:10.1227/ons.0000000000000157 73. Essayed WI, Juvekar P, Bernstock JD, Rassi MS, Almefty K, Zamani AA, Golby AJ, Al-Mefty O. Multimodal Intraoperative Image-Driven Surgery for Skull Base Chordomas and Chondrosarcomas. Cancers (Basel). Feb 15 2022;14(4):966. doi:10.3390/cancers14040966 74. Ibn Essayed W, Al-Mefty O. Falcotentorial Meningioma Resection Through the Supracerebellar Infratentorial Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jan 1 2022;22(1):e42. doi:10.1227/ONS.0000000000000004 75. Ibn Essayed W, Al-Mefty O. Resection of Peritorcular Meningioma With Sinus Intimal Layer Preservation: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Feb 1 2022;22(2):e82. doi:10.1227/ONS.0000000000000002 76. Ibn Essayed W, Rassi M, Chi JH, Al-Mefty O. Multicentric Chordoma With Initial Resection by Bilateral Transcondylar Approach: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jan 1 2022;22(1):e37-e38. doi:10.1227/ONS.0000000000000001 77. Jeelani Y, Ibn Essayed W, Al-Mefty O. Extended Transcondylar Approach With C-1 Lateral Mass Resection for the Removal of a Calcified Ventral “Spinocranial” Meningioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Aug 1 2022;23(2):e117-e118. doi:10.1227/ons.0000000000000278 78. Kadri PAS, Ibn Essayed W, Al-Mefty O. Preservation of Cranial Nerves Function in Glomus Jugulare Surgery: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Jan 1 2022;22(1):e43. doi:10.1227/ONS.0000000000000021 79. Mooney MA, Aboud E, Essayed W, Al-Mefty O. “Grade Zero” Removal of a Falcine Meningioma: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Apr 1 2022;22(4):e158. doi:10.1227/ONS.0000000000000093 80. Mooney MA, Essayed W, Patel V, Devlin PM, Al-Mefty O. Brachytherapy as Salvage Treatment for Meningioma With Malignant Progression After Exhausting Other Treatment Options: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). May 1 2022;22(5):e215. doi:10.1227/ons.0000000000000129 81. Raghu ALB, Chen JA, Valdes PA, Essayed W, Claus E, Arnaout O, Smith TR, Chiocca EA, Peruzzi PP, Bernstock JD. Cerebellar High-Grade Glioma: A Translationally Oriented Review of the Literature. Cancers (Basel). Dec 28 2022;15(1)doi:10.3390/cancers15010174 82. Robertson FC, Sha RM, Amich JM, Essayed W, Lal A, Lee BH, Calvachi Prieto P, Tokuda J, Weaver JC, Kirollos RW, Chen MW, Gormley WB. Frameless neuronavigation with computer vision and real-time tracking for bedside external ventricular drain placement: a cadaveric study. J Neurosurg. May 1 2022;136(5):1475-1484. doi:10.3171/2021.5.Jns211033 83. Strang RD, Essayed W, Aboud E, Al-Mefty O. Resection of a Giant Atypical Pediatric Meningioma Encasing the Cerebral Arterial Tree: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown). Mar 1 2022;22(3):e126-e127. doi:10.1227/ONS.0000000000000107 84. Bhave VM, Bernstock JD, Carlson JM, Kappel AD, Torio EF, Chen JA, Essayed W, Gawelek KL, DiToro DF, Izzy S, Cosgrove GR. Surgical Management in Herpes Simplex Encephalitis: Illustrative Case Report and Systematic Review of the Literature. Neurosurgery. May 1 2023;92(5):915-933. doi:10.1227/neu.0000000000002334 85. Rassi MS, Ribas ESC, Coelho VPMJ, Essayed WI, Al-Mefty O, Figueiredo EG. Comparative Anatomic Study Between Intradural Suboccipital Retrosigmoid and Extradural Transzygomatic Middle Fossa Approaches to Expose the Trigeminal Nerve. World Neurosurg. Jul 2023;175:e745-e753. doi:10.1016/j.wneu.2023.04.014 86. Sullivan JJ, Zekelman LR, Zhang F, Juvekar P, Torio EF, Bunevicius A, Essayed WI, Bastos D, He J, Rigolo L, Golby AJ, O’Donnell LJ. Directionally encoded color track density imaging in brain tumor patients: A potential application to neuro-oncology surgical planning. Neuroimage Clin. 2023/01/01/ 2023;38:103412. doi:10.1016/j.nicl.2023.103412 87. Ibn Essayed W, Jarvis CA, Bernstock JD, Slingerland A, Albanese J, Friedman GK, Arnaout O, Baird L. Positioning Transclival Tumor-Treating Fields for the Treatment of Diffuse Intrinsic Pontine Gliomas. Life (Basel). Feb 21 2023;13(3)doi:10.3390/life13030601 88. Ibn Essayed W, Bernstock JD, Chen JA, Kappel AD, Ng PR, Du R. Cavernous venous malformations in and around the central nervous system. Part 1: Dural and extradural. Journal of Neurosurgery. 01 Sep. 2023 2023:1-11. doi:10.3171/2023.6.Jns222878 89. Ibn Essayed W, Bernstock JD, Chen JA, Ng PR, Kappel AD, Du R. Cavernous venous malformations in and around the central nervous system. Part 2: Intradural. Journal of Neurosurgery. 01 Sep. 2023 2023:1-9. doi:10.3171/2023.6.Jns23830

Book Chapters

1. Singh H, Essayed W, Hussain I, Yang K, Anand V, Schwartz T. Endoscopic Transsphenoidal Pituitary Surgery: Results and Complications. Transsphenoidal Surgery Complication Avoidance and Management Techniques. 2017:245-258. 2. Singh H, Rote S, Essayed WI, Schwartz TH. A case of Gigantism. . In: Blevins LS, ed. The art of neuroendocrinology: a case-based approach to medical decision making. Nova Publishers; 2017. 3. Singh H, Rote S, Essayed WI, Schwartz TH. Chapter 13. A Case of Gigantism. In: Blevins JLS, ed. The Art of Neuroendocrinology: A Case-Based Approach to Medical Decision-Making. Nova Science Pub Inc; 2017. 4. Aum D, Arnaout O, Rassi MS, Ibn Essayed W, Al-Mefty O. Posterior and Combined Petrosal Approaches. In: Couldwell WT, ed. Skull Base Surgery of the Posterior Fossa. Springer International Publishing; 2018:55-63. 5. Essayed WI, Singh H, Schwartz TH. Endonasal Endoscopic Resection of Planum Sphenoidale Lesion. Controversies in neuroendoscopy. Thieme; 2019. 6. Essayed WI, Unadkat P, Golby AJ. 6 Functional neuroimaging II. In: Brown JA, Pilitsis JG, Schulder M, eds. Functional Neurosurgery: The Essentials. Thieme Medical Publishers, Incorporated; 2019. 7. Essayed WI, Radhouane K, Schwartz TH, Singh H. 5 Instrumentation. In: Singh H, Greenfield JP, Anand VK, Schwartz TH, eds. Pediatric Endoscopic Endonasal Skull Base Surgery. Thieme Medical Publishers, Incorporated; 2020. 8. Essayed WI, Singh H, Greenfield JP, Schwartz TH. 16 Craniopharyngioma. In: Singh H, Greenfield JP, Anand VK, Schwartz TH, eds. Pediatric Endoscopic Endonasal Skull Base Surgery. Thieme Medical Publishers, Incorporated; 2020. 9. Singh H, Essayed WI, Schwartz TH. Endoscopic technology and repair techniques. Handbook of Clinical Neurology. 2020;170:217-225. doi:10.1016/B978-0-12-822198-3.00042-2 10. Singh H, Lo A, Kim L, Essayed WI, Schwartz TH. 11 Ventral Approaches to Intraparenchymal Tumors of the Skull Base and Brainstem. In: Singh H, Greenfield JP, Anand VK, Schwartz TH, eds. Pediatric Endoscopic Endonasal Skull Base Surgery. Thieme Medical Publishers, Incorporated; 2020:76. 11. Ibn Essayed W, Almefty R, Haddad GF, Al-Mefty O. CH172 Meningiomas. In: Winn HR, MD, ed. Youmans and Winn Neurological Surgery. Eight Edition ed. Elsevier; 2021:1107-1132.e5.

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