Faculty Profile

Dr. Reza Yassari, M.D.

Reza Yassari, M.D.

Associate Professor of Clinical Neurological Surgery, The Leo M. Davidoff Department of Neurological Surgery

Director, Neurological Surgery Residency Training Program, The Leo M. Davidoff Department of Neurological Surgery

Professional Interests

Dr. Yassari earned his medical degree from the Vienna School of Medicine in Austria and a Master of Science in Experimental Pathology from the University of Chicago. He completed his residency in Neurosurgery at the University of Chicago Medical Center and was a fellow at the MacLean Center for Clinical Medical Ethics. Subsequently he was an instructor at the Johns Hopkins Hospital in Spinal Oncology and Reconstructive and Complex Spine with the Dept. of Neurosurgery. Dr. Yassari specializes in the treatment of complex degenerative, traumatic and neoplastic spine diseases, including intrinsic extradural, intradural and intramedullary spinal cord tumors as well as metastatic spine tumors. Dr. Yassari will focus on developing the spinal oncology program in collaboration with the Montefiore Einstein Center for Cancer Care and the Department of Radiation Oncology. He combines his training in minimally invasive surgery and spinal oncology with the exisiting infrastructure for advanced intraoperative image guidance technology at Montefiore Medical Center to offer innovative, cutting-edge surgical treatment options to patients with all aspects of spine pathologies, in particular metastatic spine disease.

 


Selected Publications

  1. The Use of a Pedicle Screw-Cortical Screw Hybrid System for the Surgical Treatment of a Patient with Congenital Multilevel Spinal Non-segmentation Defect and Spinal Column Deformity: A Technical Note. Ashayeri K, Nasser R, Nakhla J, Yassari R. Eur Spine J. 2016 Nov;25(11):3760-3764.
  2. Postoperative urinary retention in patients undergoing elective spinal surgery. Altschul D, Kobets A, Nakhla J, Jada A, Nasser R, Kinon MD, Yassari R, Houten J. J Neurosurg Spine. 2016 Oct 21:1-6.
  3. Atlantoaxial Rotatory Subluxation: A Review for the Pediatric Emergency Physician. Kinon MD, Nasser R, Nakhla J, Desai R, Moreno JR, Yassari R, Bagley CA. Pediatr Emerg Care. 2016 Oct;32(10):710-716.
  4. Ollier Disease with Anaplastic Astrocytoma: A Review of the Literature and a Unique Case. Gajavelli S, Nakhla J, Nasser R, Yassari R, Weidenheim KM, Graber J. Surg Neurol Int. 2016 Sep 1;7 (Suppl 23):S607-11.
  5. Resection of Spinal column Tumors Utilizing Image-Guided Navigation: A Multicenter Analysis. Nasser R, Drazin D, Nakhla J, Al-Khouja L, Brien E, Baron E, Kim T, Johnson P, Yassari R. Neurosurg Focus. 2016 Aug;41(2):E15. doi: 10.3171/2016.5. FOCUS16136.
  6. Retained Needle after Cement Injection during Vertebral Augmentation and its Management Strategy. Kosse A, Nakhla JP, Yassari R, Abramowicz AE, Brook A. BMJ Case Rep. 2016 Feb 18; 2016. pii: bcr2015012180. doi: 10.1136/bcr-2015-012180.
  7. Ruptured anterior spinal artery aneurysm from a herniated cervical disc. A case report and review of the literature. Nakhla J, Nasser R, Yassari R, Pasquale D, Altschul D. Surg Neurol Int. 2016 Jan 28;7:10. doi: 10.4103/2152-7806.175072.
  8. A Rare Cases of Panspinal Pott’s Disease Simulating Metastatic Disease. Houten JK, Kobets AJ, Yassari R. Spine J. 2015 Aug 31. pii: S1529-9430(15)01358-3.
  9. Traumatic Pediatric Atlantoaxial Rotatory Subluxation Successfully Reduced and Discharged from the Emergency Department: A Case Report. Merritt K, Nasser R, Jonathan N, Yassari R, Rupen D, Bagley C. J Spine S6: 005. doi:10.4172/2165-7939.S6-005 (2015) S6
  10. The Integration of Radiosurgery for the Treatment of Patients with Metastatic Spine Disease. Sharan A, Szulc A, Krystal J, Yassari R, Laufer I, Bilsky M. Journal of the American Academy of Orthopaedic Surgeons. July 2014, Vol 22, No 7: 447-454
  11. Decision Making in Spinal Care. Yassari R, Miller T. J Neurointerv Surg. 2013 Mar 16.
  12. Infection of the Spinal Subdural Space in Children; A Series of 11 Contemporary Cases and Review of all Published Reports. A Multinational Collaborative Effort. Sandler AL, Thompson D, Goodrich JT, van Aalst J, Kolatch E, El Khashab M, Nejat F, Cornips E, Mohindra S, Gupta R, Yassari R, Daniels LB 3rd, Biswas A, Abbott R. Childs Nerv Syst. 2013 Jan;29(1):105-17. doi: 10.1007/s00381-012-1916-4. Epub 2012 Sep 30.
  13. Destructive T10 Verterbal Lesion Leads to Diagnosis of Metastatic Ovarian Cancer. Callery, RJ, Burton E, Sharan A, Yassari R, Goldberg GL. Gynecol Oncol Case Rep. 2012 Nov 1;4:1-3. doi: 10.1016/j.gynor.2012.10.007. eCollection 2012.
  14. Posterior-Only Approach for En Bloc Sacrectomy: Clinical Outcome in 36 Consecutive Patients. Clarke MJ, Dasenbrock H, Bydon A, Sciubba DM, McGrit MJ, Hsieh PC, Yassari R, Gokaslan ZL, Wolinsky JP. Neurosurgery. 2012 Aug;71(2):357-64; discussion 364.
  15. A Novel Scoring Systen for Assessing Chiari Malformation Type I Treatment Outcomes. Aliaga L, Hekman KE, Yassari R, Straus D, Luther A, Chen J, Sampat A, Frim DM. Neurosurgery. 2011 Aug 12.
  16. Percutaneous Instrumentation of Pathologic Vertebral Fractures. Clarke MJ, Yassari R, Sciubba DM, Rose P, and Dekutoski MB. US Oncology & Hematology, 2011;7(2):98–102
  17. Three-Level En Bloc Spondylectomy for Chordoma. Clarke MJ, Hsu W, Suk I, McCarthy E, Black JH 3rd, Sciubba DM, Bydon A, Yassari R, Witham TF, Gokaslan ZL, Wolinsky JP. Neurosurgery. 2011 Jun;68(2 Suppl Operative):325-33; discussion 333
  18. Surgical Mystery: Where is the Rongeur Tip? Bydon A, Rinsheng X, J Conte, Gokaslan Z, Witham T, Yassari R. Spine (Phila Pa 1976). 2010 Aug 1;35(17):E867-72.
  19. Temporal profile of K+ channel dysfunctionin cerebrovascularsmooth muscle after experimental subarachnoid hemorrhage. Jahromi BS, Aihara Y, Ai J, Zhang ZD, Weyer G, Nikitina E, Yassari R, Houamed KM, Macdonald RL. Neurosci Lett. 2008 Jul 25;440(1):81-6. Epub 2008 May 10.
  20. Induction of housekeeping gene expression after subarachnoid hemorrhage in dogs. Aihara Y, Jahromi BS, Yassari R, Takahashi M, Macdonald RL. J Neurosci Methods. 2008 Jul 15;172(1):1-7. Epub 2008 Apr 10.
  21. Miracle Surgery for Foreign Patients. Yassari R. Virtual Mentor, American Medical Association Journal of Ethics April 2008, Vol 10, Num 4: 206-210
  22. Preserved BK Channel Function in Vasospastic Myocytes from the Dog Model of Subarachnoid Hemorrhage. Jahromi BS, Aihara Y, Aij, Zhang ZD, Weyer G, Nikitina E, Yassari R, Houamed KM, Macdonald RL. J Vasc Res 2008 Apr 10;45(5):402-415
  23. Low Incidence of Subdural Grid-Related Complications in Prolonged Pediatric EEG Monitoring. Musleh W, Yassari R, Frim DM. Pediatric Neurosurgery 2006;42(5):284-7
  24. The Chiari pseudotumor cerebri syndrome: symptom recurrence after decompressive surgery for Chiari malformation type I. Fagan L, Fergusson S, Yassari R, Frim DM. Pediatr Neurosurg. 2006;42(1):14-9
  25. Bladder Outflow Obstruction caused by prostatic calculi. Calleja R, Yassari R, Wilkinson EP, Webb R. ScientificWorldJournal. Jun 07;4 Suppl 1:46-7
  26. Evaluation and Management of the Chiari Malformation Type 1 for the Primary Care Pediatrician. Yassari R, Frim DM. Pediatr Clin North Am. Apr;51(2):477-90
  27. Angiographic, hemodynamic and histological characterization of an arteriovenous fistula in rats. Yassari R, Sayama T, Jahromi BS, Stooley M, Macdonald RL. Acta Neurochir (Wien). May;146(5):495-504
  28. Magnesium and experimental vasospasm. R. Loch Macdonald RL, Curry D, Aihara Y, Zhang Z, Jahromi BS, Yassari R. J Neurosurg. 2004 Jan;100(1):106-10. PMID: 14743919
  29.  Molecular profile of vascular smooth muscle ion channels following experimental cerebral vasospasm. Aihara Y, Jahromi BS, Yassari R, Nikitina E, Agbaje-Williams M, Macdonald. J Cereb Blood Flow Metab. 2004 Jan;24(1):75-83. PMID: 14688619
  30. Effect of nitric oxide donor on and correlation of changes in cyclic nucleotide levels with experimental vasospasm. Aihara Y, Jahromi BS, Yassari R, Sayama T, Macdonald RL. Neurosurgery. 2003 Mar;52(3):661-7; discussion 666-7.PMID: 12590692
  31. Tumour-endothelial interactions in co-culture: coordinated changes of gene expression profiles and phenotypic properties of endothelial cells. Khodarev N, Yu J, Nodzenski E, Darga T, Brown CK, Mauceri HJ, Yassari R, Gupta N, Weichselbaum RR. J Cell Sci. 2003 Mar 15;116(Pt 6):1013-22. PMID: 12584245
  32. Dural arteriovenous fistula after craniotomy for pilocytic astrocytoma in a patient with protein S deficiency. Yassari R, Jahromi BS, Macdonald RL. Surg Neurol. 2002 Jul;58(1):59-64; discussion 64. PMID: 12361657

 Invited Speaker/Visiting Professorship

  1. Yassari R. (2016). “Surgical Education 2.0”. Grand Rounds, Visiting Professor, Department of Neurological Surgery at Columbia University Medical Center and New York-Presbyterian Hospital, New York, October 28th, 2016
  2. Yassari R. (2016). “Spinal Oncology: A Multidisciplinary Approach”. The Powelton Club, Newburgh, New York, September 24th, 2016
  3. Yassari R. (2016). “Mongolia Mission 2014-2016”. Stryker Headquarter, Long Island, New York, Sept 12th, 2016
  4. Yassari, R. (2016) “Better Residents, Better Surgeons, Better Hospitals”, Grand Rounds, Visiting Professor, Northwestern University, Department of Neurosurgery, Chicago, July 8th 2016
  5. Yassari, R. (2016) “Management of Aneurysmal Subarachnoid Hemorrhages”, Annual Stroke Meeting, Ulaan Baatar, Mongolia, May 27th, 2016
  6. Yassari, R. (2015). “Unusual Imaging Findings in the Patient with Spine Pain: To Treat Or Not To Treat?”. 2015 Annual Assembly, American Academy of Physical Medicine and Rehabilitation, Boston, Oct 2nd, 2015.
  7. Yassari R. (2015). “Mongolia Initiative 2015”. Globus Headquarter, Pennsylvania, Sept 21st, 2015
  8. Yassari R. (2015). “Minimally Invasive Stereotactic Separation Surgery for Resection of Metastatic Spine Lesions: A Feasibility Study”. AOSpine Global Spine Congress 2015, Buenos Aires, Argentina, May 21st, 2015
  9. Yassari, R (2015). "Current Concepts in Endovascular Intracranial Emergencies”. Ministry of Health Annual Neuroscience Meeting, Ulaan Baatar, Mongolia, May 15th, 2015
  10. Yassari, R. (2015) “Spinal Tumors: Overview of Treatment Options” 3rd University Central Hospital, Ulaan Baatar, Mongolia, Visiting Professor Neurosurgery, May 12th, 2015
  11. Yassari, R (2015). “Women’s Health: Rewriting the Goals”. Panelist, Chicago Council on Global Affairs, Women and Global Development Forum. Chicago, March 6th, 2015
  12.  Yassari R (2014). Resection Technique Thoracic Chest Wall Tumors with Spinal Involvement. Cardiothoracic Surgery Grand Rounds, Montefiore Medical Center, Aug 11th, 2014.
  13. Yassari R (2014). “Surgical Management of Anterior Fossa & Orbital Roof Defects”, National Central Hospital, Ulaan Baatar, Mongolia, Visiting Professor Neurosurgery, May 23th, 2014
  14. Yassari R (2014). “Neurosurgical Training in the U.S”, National Central Hospital, Ulaan Baatar, Mongolia, Visiting Professor Neurosurgery, May 21st, 2014
  15. Yassari R (2014). “Surgical Management of Intradural Spinal Cord Tumors”, 3rd University Central Hospital, Ulaan Baatar, Mongolia, Visiting Professor Neurosurgery, May 20th, 2014
  16. Yassari R (2014). “Vertebral Development and Malformation”, 3rd University Central Hospital, Ulaan Baatar, Mongolia, Visiting Professor Neurosurgery, May 20th, 2014
  17. Yassari R (2014). “Surgical Techniques and Methods for Spinal Surgery”, 3rd University Central Hospital, Ulaan Baatar, Mongolia, Visiting Professor Neurosurgery, May 19th, 2014
  18. Yassari, R (2014). Relief and Rebuilding in Times of Crisis: Refugee and Humanitarian Aid. Panelist, Chicago Council on Global Affairs, International Women’s Day Global Health Symposium. Chicago, March 6th, 2014
  19. Yassari, R (2014). Spinal Neurosurgery. Surgery Interest Group. Albert Einstein College of Medicine. Jan 13th, 2014.
  20. Yassari, R (2013). Cauda Equina Syndrome. 10th Annual Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 4th, 2013.
  21. Yassari, R (2013). Management of Spinal Metastasis: A Multidisciplinary Approach. Grand Rounds, Dept. of Physical Medicine & Rehabilitation, Montefiore Medical Center, May 7th, 2013.
  22. Yassari, R (2012). Physiology & Pathophysiology of Intracranial Pressure. St. Barnabas Hospital Trauma Grand Rounds, Nov 9th, 2012.
  23. Yassari, R (2012). Recognition & Treatment of Increased Intracranial Pressure. St. Barnabas Hospital ER Grand Rounds, New York, Dec 12th, 2012.
  24. Yassari, R (2012). Physiology & Pathophysiology of Intracranial Pressure. St. Barnabas Hospital Trauma Grand Rounds, New York, Nov 9th, 2012.
  25. Yassari, R (2012). Metastatic Spine Disease: Treatment Algorithm. 9th Annual Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 4th, 2012.
  26. Yassari, R, Sharan A, (2012). Management of Metastatic Spine Disease. Medical Oncology Grand Rounds, Montefiore Medical Center, Sept, 25th, 2012.
  27. Yassari, R (2012). Morphine Pump Placement and Management. Division of Critical Care, Montefiore Medical Center, June 5th, 2012.
  28. Yassari, R (2012). Surgical Management of Spinal Metastasis. Teaching Rounds, Dept. of Physical Medicine & Rehabilitation, Montefiore Medical Center, April 3th, 2012.
  29. Yassari, R (2012). Surgical Management of Spinal Metastasis: A MultiDisciplinary Approach. Neurology Grand Rounds, Dept. of Neurology, Montefiore Medical Center, January 12th, 2012
  30. Yassari, R (2011). Patterns of Spinal Metastatic Disease & Management Issues. 8th Annual Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 6th, 2011.
  31. Yassari, R (2011) Symposium: Current Techniques in the Management of Spine Tumors: Diagnosis and Overview of Treatment Options. Panelist, North American Spine Society, 26th Annual Meeting, Chicago, November 5th, 2011
  32. Yassari, R (2011). Management of Lumbar Stenosis with Spondylolisthesis: Decompression without fusion is the answer. Panelist, 8th Annual Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 6th, 2011.
  33. Yassari, R (2011). Cervical Spondylosis, Disc Herniation, and OPLL. 8th Annual Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 6th, 2011.
  34. Yassari, R (2011) Symposium: Current Techniques in the Management of Spine Tumors: Diagnosis and Overview of Treatment Options. Panelist, North American Spine Society, 26th Annual Meeting, Chicago, November 5th, 2011
  35. Yassari, R (2010). Spinal Disease in Cancer Patients. Oncology Grand Rounds, Montefiore Medical Center, Nov, 11th, 2010.
  36. Yassari, R (2010). Patterns of Metastatic Disease. 7th Annual Clinical Meeting Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 7th, 2010.
  37. Yassari, R (2010). Surgical Management of Cervical Disc Disease: Anterior Cervical Fusion is the Answer. 7th Annual Clinical Meeting Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 7th, 2010.
  38. Yassari, R (2010). Cervical Spondylosis, Disc Herniation, and OPLL. 7th Annual Clinical Meeting Degenerative Disease of the Spine: Diagnosis & Management. Montefiore Medical Center, Nov 7th, 2010.
  39. Yassari R (2010). Back and Neck Pain. Johns Hopkins Bayview Medical Center. Interactive Seminar with prospective patients. Nov 11th, 2010
  40. Yassari R (2010). Low Back Pain. Johns Hopkins Bayview Medical Center. Interactive Seminar with prospective patients. Sept 9th, 2010
  41. Yassari R (2007). The Role of Ephrins in the Pathogenesis of Arterio-Venous Malformations. 93rd American College of Surgeons Meeting, New Orleans, Oct 2007
  42. Jahromi BS, Aihara Y, Agbaje-Williams M, Nikitina E, Weyer GW, Ryan D, Yassari R, Macdonald RL (2004). Downregulation of potassium channels contributes to smooth muscle depolarization and contraction in cerebral vasospasm. 29th International Stroke Conference, Feb. 5-7, San Diego, California.
  43. Jahromi BS, Aihara Y, Agbaje-Williams M, Nikitina E, Weyer GW, Ryan D, Yassari R, Macdonald RL (2003). Voltage-gated potassium channels are downregulated in experimental cerebral vasospasm. 53rd Annual Meeting of the Congress of Neurological Surgeons, Oct. 18-23, Denver, Colorado.
  44. Jahromi BS, Aihara Y, Agbaje-Williams M, Nikitina E, Weyer GW, Ryan D, Yassari R, Macdonald RL (2003). Kv2.2 Downregulation Following Experimental Cerebral Vasospasm in Dogs. 8th International Conference on Cerebral Vasospasm, July 10-12, Chicago, Illinois.
  45. Aihara Y, Jahromi BS, Agbaje-Williams M, Nikitina E, Weyer GW, Ryan D, Yassari R, Macdonald RL (2003). Molecular profile of vascular ion channels after subarachnoid hemorrhage. 8th International Conference on Cerebral Vasospasm, July 10-12, Chicago, Illinois.
  46. Yassari R, Frim DM, Fagan L, Yamini B (2003). Indication for Chiari decompression derived from outcome analysis: a retrospective study of 82 patients.10th Annual Charles Huggins Research Conference, May 10, Chicago, Illinois.
  47. Aihara Y, Jahromi BS, Yassari R, Sayama T, Macdonald RL (2002). Effect of a nitric oxide donor on experimental vasospasm. 52nd Annual Meeting of the Congress of Neurological Surgeons, Sept. 21-26, Philadelphia, Pennsylvania.
  48. Yassari R (1998). Detection of HSV DNA in brain tissue by in situ Polymerase Chain Reaction. Presented for the Wilhelm-Auerswald-Dissertation-Prize 1997, Austrian Society of Physicians, May 1998
  49. Yassari R (1997). Necrotizing Fasciitis after Percutaneous Nephrolithotomy. Presented for the William-Fellowes-Prize 1997, Norfolk & Norwich Hospital, October 1997.
  50. Yassari R (1997). A foreign body in the bladder of a 35-year-old woman. Presented at the Grand Rounds, Dept. of Urology, Norfolk & Norwich Hospital, November 1997
  51. Yassari R (1996). HSV 1 Encephalitis: Diagnosis and Treatment. Presented at the Grand Rounds, Section of Neurosurgery, University of Chicago Hospitals, December 1996.

Book Chapters           

  1. Dasenbrock HH, Yassari R, Witham T. Neurogenic Claudication: Operative Treatment (Decompression and Fusion).  In: Evidence-Based Orthopaedics, BMJ (in print)
  2. Yassari R, Carson B, Rigamonti D. Neurologic Complication of the Spine in Achondroplasia. In: Operative Neurosurgical Techniques. Ed 6, Schmidek & Sweet. Elsevier Saunders Publishers (in print)
  3. Yassari R, Wolinsky JP. Atlanto-axial Instability and Stabilization In: Operative Neurosurgical Techniques. Ed 6, Schmidek & Sweet. Elsevier Saunders Publishers (in print)
  4. Yassari R, Bydon A. Thoracolumbar Trauma. In: Handbook of Neurosurgery. Ed.: Rigamonti D. Johns Hopkins University Press (in print)
  5. Jahromi BS, Aihara Y, Agbaje-Williams M, Nikitina E, Weyer G, Ryan D, Yassari R, Macdonald RL. Potassium channels in experimental cerebral vasospasm. In: Cerebral Vasospasm. Proc. of the 8th Int. Conference. ed. Macdonald RL. New York, Thieme Medical Publishers.
  6. Aihara Y, Jahromi BS, Yassari R, Nikitina E, Agbaje-Williams M, Macdonald RL. Changes in vascular ion channels after subarachnoid hemorrhage. In: Cerebral Vasospasm. Proc. of the 8th Int. Conference. ed. Macdonald RL. New York, Thieme Medical Publishers.

Material in this section is provided by individual faculty members who are solely responsible for its accuracy and content.

Montefiore Medical Center
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Tel: 718.920.7487
Fax: 718.584.0224
ryassari@montefiore.org

Research Information