Michael R Egnor, MD

I have been providing pediatric and adult neurosurgical care to the residents of Suffolk County for over 30 years. I perform many pediatric and adult neurosurgical procedures annually and I am also the Directory of the neurosurgical residency program. My clinical practice includes pediatric and adult patients diagnosed with Arnold Chiari Deformity, hydrocephalus, normal pressure hydrocephalus, craniosynostosis, brain tumors and spina bifida, as well as traumatic brain injury.

 

• A model of hydrocephalus due to windkessel impairment caused by subarachnoid space obstruction.
  
  Egnor M, Shirdel Abdolmaleki N, Ravishankar A, Mani R, Wang Y, Fiore S, Djurić PM.
  J Neurosurg Pediatr. 2026 Mar 6:1-9. doi: 10.3171/2025.8.PEDS24604. Online ahead of print.
  PMID: 41791099 
   
• Hepatitis C ventriculitis obscured by concurrent methicillin-resistant Staphylococcus aureus infection after ventriculoperitoneal shunt placement: An illustrative case.
  
  Uwakwe CD, Mani R, Swarna S, Blaszczyk A, Calandra C, Egnor M.
  Surg Neurol Int. 2025 Aug 29;16:370. doi: 10.25259/SNI_708_2025. eCollection 2025.
  PMID: 41036029      Free PMC article.
   
• Long-standing overt ventriculomegaly in adults (LOVA) as a distinct entity on the neurologist's differential: a narrative review.
  
  Mani R, Basem J, Schwartz G, Egnor M.
  BMJ Neurol Open. 2025 May 1;7(1):e001021. doi: 10.1136/bmjno-2024-001021. eCollection 2025.
  PMID: 40322024      Free PMC article.      Review.  
   
• Ventriculomegaly without elevated intracranial pressure? Normal pressure hydrocephalus as a disorder of the cerebral windkessel.
  
  Mani R, Basem J, Yang L, Shirdel Abdolmaleki N, Ravishankar A, Fiore S, Djuric P, Egnor M.
  Front Neurol. 2025 May 1;16:1591275. doi: 10.3389/fneur.2025.1591275. eCollection 2025.
  PMID: 40376155      Free PMC article. 
   
• Embolization of the Middle Meningeal Artery for Chronic Subdural Hematoma.
  
  Fiorella D, Monteith SJ, Hanel R, Atchie B, Boo S, McTaggart RA, Zauner A, Tjoumakaris S, Barbier C, Benitez R, Spelle L, Pierot L, Hirsch JA, Froehler M, Arthur AS; STEM Investigators.
  N Engl J Med. 2025 Feb 27;392(9):855-864. doi: 10.1056/NEJMoa2409845. Epub 2024 Nov 20.
  PMID: 39565980      Clinical Trial.
   
• Review of theories into the pathogenesis of normal pressure hydrocephalus.
  
  Mani R, Basem J, Yang L, Fiore S, Djuric P, Egnor M.
  BMJ Neurol Open. 2024 Oct 17;6(2):e000804. doi: 10.1136/bmjno-2024-000804. eCollection 2024.
  PMID: 39430787      Free PMC article.
   
• A quantitative model of the cerebral windkessel and its relevance to disorders of intracranial dynamics.
  
  Egnor M, Yang L, Mani RM, Fiore SM, Djurić PM.
  J Neurosurg Pediatr. 2023 Jun 23;32(3):302-311. doi: 10.3171/2023.1.PEDS22372. Print 2023 Sep 1.
  PMID: 37382303 
   
• Brain Circuitry of Consciousness: A Review of Current Models and a Novel Synergistic Model With Clinical Application.
  
  Gammel TC, Alkadaa LN, Saadon JR, Saluja S, Servider J, Cleri NA, Egnor M, Davis RP, Huang C, Saalmann YB, Mofakham S, Mikell CB.
  Neurosurg Pract. 2023 Apr 7;4(2):e00031. doi: 10.1227/neuprac.0000000000000031. eCollection 2023 Jun.
  PMID: 37213564      Free PMC article.  
   
• Why don't ventricles dilate in pseudotumor cerebri? A circuit model of the cerebral windkessel.
  
  Wang Z, Yang L, Djurić PM, Egnor MR.
  J Neurosurg Pediatr. 2022 Mar 18;29(6):719-726. doi: 10.3171/2022.1.PEDS21527. Print 2022 Jun 1.
  PMID: 35303694
   
• Bifrontal Biparietal Cruciate Decompressive Craniectomy in Pediatric Traumatic Brain Injury.
  
  McHugh DC, Fiore SM, Strong N, Egnor MR.
  Pediatr Neurosurg. 2019;54(1):6-11. doi: 10.1159/000495067. Epub 2019 Jan 3.
  PMID: 30605902 
   
• Ventricular peritoneal shunt malfunction after operative correction of scoliosis: report of three cases.
  
  Lai LP | Egnor MR | Carrion WV | Haralabatos SS | Wingate MT
  The spine journal : official journal of the North American Spine Society
  2014 Nov 1
   
• Ventricular dilation and elevated aqueductal pulsations in a new experimental model of communicating hydrocephalus.
  
  Wagshul ME | McAllister JP | Rashid S | Li J | Egnor MR | Walker ML | Yu M | Smith SD | Zhang G | Chen JJ | Benveniste H
  Experimental neurology
  2009 Jul
   
• Resonant and notch behavior in intracranial pressure dynamics.
  
  Wagshul ME | Kelly EJ | Yu HJ | Garlick B | Zimmerman T | Egnor MR
  Journal of neurosurgery. Pediatrics
  2009 May
   
• Intracranial pressure waves: characterization of a pulsation absorber with notch filter properties using systems analysis: laboratory investigation.
  
  Zou R | Park EH | Kelly EM | Egnor M | Wagshul ME | Madsen JR
  Journal of neurosurgery. Pediatrics
  2008 Jul
   
• Communicating hydrocephalus in adult rats with kaolin obstruction of the basal cisterns or the cortical subarachnoid space.
  
  Li J | McAllister JP 2nd | Shen Y | Wagshul ME | Miller JM | Egnor MR | Johnston MG | Haacke EM | Walker ML
  Experimental neurology
  2008 Jun
   
• Improved cerebrospinal fluid flow measurements using phase contrast balanced steady-state free precession.
  
  McCormack EJ | Egnor MR | Wagshul ME
  Magnetic resonance imaging
  2007 Feb
   
• Amplitude and phase of cerebrospinal fluid pulsations: experimental studies and review of the literature.
  
  Wagshul ME | Chen JJ | Egnor MR | McCormack EJ | Roche PE
  Journal of neurosurgery
  2006 May
   
• What we don't (but should) know about hydrocephalus.
  
  Bergsneider M | Egnor MR | Johnston M | Kranz D | Madsen JR | McAllister JP 2nd | Stewart C | Walker ML | Williams MA
  Journal of neurosurgery
  2006 Mar
   
• Cerebrospinal fluid pulsatility and hydrocephalus: the fourth circulation.
  
  Madsen JR | Egnor M | Zou R
  Clinical neurosurgery
  2006
   
• Decompressive craniectomy in pediatric patients with traumatic brain injury with intractable elevated intracranial pressure.
  
  Rutigliano D | Egnor MR | Priebe CJ | McCormack JE | Strong N | Scriven RJ | Lee TK
  Journal of pediatric surgery
  2006 Jan
   
• Increased Phase Synchronization between Intracranial Pressure and Arterial Blood Pressure during Elevated Intracranial Pressure in Dogs.
  
  Zou R | McCormack E | Egnor M | Kim D | Wagshul M | Macdonald B | Madsen J
  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference
  2005
   
• Resonance and the synchrony of arterial and CSF pulsations.
  
  Egnor M | Wagshul M | Zheng L | Rosiello A
  Pediatric neurosurgery
  2003 May
   
• A model of pulsations in communicating hydrocephalus.
  
  Egnor M | Zheng L | Rosiello A | Gutman F | Davis R
  Pediatric neurosurgery
  2002 Jun
   
• A model of intracranial pulsations.
  
  Egnor M | Rosiello A | Zheng L
  Pediatric neurosurgery
  2001 Dec
   
• Vancomycin-resistant Enterococcus faecium shunt infection in an infant: an antibiotic cure.
  
  Nachman SA | Verma R | Egnor M
  Microbial drug resistance (Larchmont, N.Y.)
  1995 Spring