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Doron Sommer

Research Interests

  • Clinical outcomes in Endoscopic skull base surgery, Adult and pediatric sleep apnea and Inflammatory mediators in nasal polyposis
  • Development, refinement of surgical techniques in endoscopic skull base surgery


  • Active Medical Staff, Department of Surgery, Hamilton Health Sciences, Hamilton

Featured Publications

  • McHugh T, Snidvongs K, Xie M, Banglawala S, Sommer D.High tissue eosinophilia as a marker to predict recurrence for eosinophilic chronic rhinosinusitis: a systematic review and meta-analysis.Int Forum of Allergy Rhinol. Int Forum Allergy Rhinol. 2018 Dec;8(12):1421-1429.
  • Cottrell J, Yip J, Chan Y, Chin CJ, Damji A, de Almeida JR, Desrosiers M, Janjua A, Kilty S, Lee JM, Macdonald KI, Meen EK, Rudmik L, Sommer DD, Sowerby L, Tewfik MA, Vescan AD, Witterick IJ, Wright E, Monteiro E.  Quality indicators for the diagnosis and management of chronic rhinosinusitis. Int Forum Allergy  Rhinol.  Int Forum Allergy Rhinol. 2018 Dec;8(12):1369-1379.
  • Chitsuthipakorn W, Seresirikachorn K, Sommer DD, McHugh T, Snidvongs K. Endotypes of Chronic Rhinosinusitis Across Ancestry and Geographic Regions. Curr Allergy Asthma Rep. 2018 Jul 11;18(9):46.
  • Sommer DD, Arbab-Tafti S, Farrokhyar F, TewfikM, Vescan A, Witterick I, Rotenberg B, Chandra R, Weitzel E, Wright E, Ramakrishna J.  A Challenge-Response Endoscopic Sinus Surgery Specific Checklist as an Add-on to Standard Surgical Checklist: An evaluation of potential safety and quality improvement issues. Int Forum Allergy  Rhinol.  2018 Jul;8(7):831-836.
  • Lach B, Reddy K, Sommer DD, Whitton AC, Baweja R.  Amelanotic melanocytoma of the sella mimicking pituitary adenoma. Clin Neuropathol. 2017 Nov/Dec;36(6):283-287. 
  • Zagzoog N, Ra G, Koziarz A, Provias J, Sommer D, Almenawer SA, Reddy K. Metastatic Liposarcoma of the Skull Base: A Case Report and Review of Literature. Neurosurgery. 2017 Apr 1;80(4):219-223
  • Manoranjan B, Mahendram S, Almenawer SA, Venugopal C, Mcfarlane N, Hallett R, Vijayakumar T, Algird A, Murty NK, Sommer DD, Provias JP, Reddy K, Singh SK.  The identification of human pituitary adenoma-initiating cells. Acta Neuropathol Commun. Nov. 2016; 4: 125.
  • Rebelo J, Nayan S, Choong K, Fulford M, Chan A, Sommer DD. To anticoagulate? Controversy in the management of thrombotic complications of head & neck infections. Int J Pediatr Otorhinolaryngol.  2016 Sept. 129-135. 
  • Greig SR, Cooper TJ, Sommer DD, Nair S, Wright ED. Objective sinonasal functional outcomes in endoscopic anterior skull-base surgery: an evidence-based review with recommendations. Int Forum Allergy Rhinol. 2016 Oct;6(10):1040-1046.
  • Sommer DD, Rotenberg BW, Sowerby LJ, Lee JM, Janjua A, Witterick IJ, Monteiro E, Gupta MK, Au M, Nayan S. A novel treatment adjunct for aspirin exacerbated respiratory disease: the low-salicylate diet: a multicenter randomized control crossover trial. Int Forum Allergy Rhinol. 2016 Apr;6(4):385-91.
  • Banglawala SM, Schlosser RJ, Morella K, Chandra R, Khetani J, Poetker DM, Rayar M, Rudmik L, Sautter NB, Sommer DD, Smith TL, Soler ZM.Qualitative development of the sinus control test: a survey evaluating sinus symptom control. Int Forum Allergy Rhinol. 2016 May 6. (5):491-9
  • Cohen N, Sommer DD. Post-tonsillectomy pain control: consensus or controversy? Pain Manag. 2016;6(1):31-7.
  • Scott GM, Roth K, Rotenberg B, Sommer DD, Sowerby L, Fung K. Evaluation of a novel high-fidelity epistaxis task trainer.  Laryngoscope. 2016 Jul;126 (7):1501-3.
  • Wong JS, Hoffbauer S, Yeh DH, Rotenberg B, Gupta M, Sommer DD. The usefulness of routine histopathology of bilateral nasal polyps - a systematic review, meta-analysis, and cost evaluation. J Otolaryngol Head Neck Surg. 2015 Nov 4;44-46.
  • Smith K, Sommer DD, Grondin S, Rotenberg B, Tewfik M, Kilty S, Wright E, Janjua A, Lee J, Rudmik L. Assessment of the current Canadian rhinology workforce.  Journal of Otolaryngology - Head and Neck Surgery. 2015 May 9;44(1):15.
  • Kelly LE, Sommer DD, Ramakrishna J, Hoffbauer S, Arbabtafti S, Reid D, Maclean J, Koren G. Morphine or Ibuprofen for Post-Tonsillectomy Analgesia: A Randomized Trial. Pediatrics. 2015 Feb ;135(2):307-13.
  • Macdonald  K, Wright E, Sowerby  L, Rotenberg B, Chin C, Rudmik  L, Sommer  D, Nayan S, Desrosiers M, Tewfik M, Valdes C, Massoud E, Thomas D,  Kilty S,  Vescan  A, Mechor B, Lavigne  F,  Fandiño M,  Javer A, Witterick  I. Squeeze bottle versus saline spray after endoscopic sinus surgery for chronic rhinosinusitis: a pilot multi center trial. American Journal of Rhinology and Allergy. 2015 Jan;29(1):13-7
  • Ramakrishna J, Strychowsky J, Gupta M, Sommer DD. Sialendoscopy for the management of juvenile recurrent parotitis: A systematic review and meta-analysis. Laryngoscope. 2014 Nov 13. doi: 10.1002/lary.25029. 
  • Sommer DD, Hoffbauer S, Au M, Sowerby LJ, Gupta MK, Nayan S. Treatment of aspirin exacerbated respiratory disease with low-salicylate diet: a pilot cross-over study. Otolaryngol Head Neck Surg. 2014 Oct 24.
  • Neighbour H, Goodwin J, Strychowsky J, Rahman S, Abdelshaheed S, Nair P, Sommer D. Relationship between sputum eosinophilia and sinus disease in patients with eosinophilic bronchitis. American Journal of Rhinology & Allergy. 2014 Sep-Oct;28(5):378-82. 
  • Yeh DH, Wong J, Hoffbauer S, Wehrli B, Sommer D, Rotenberg BW. The utility of routine polyp histopathology after endoscopic sinus surgery. Int Forum Allergy Rhinol. 2014 Nov;4(11):926-30.
  • Banglawala SM, Gill MS, Dhillion N, Khan JS, Gupta MK, Psaltis A, Schlosser R, Sommer DD. Nasal Packing After Septoplasty: Cardiopulmonary Impact. JAMA Otolaryngol Head Neck Surg. 2014 Mar;140(3):253-8.
  • Nayan S, Gupta M, Strychowsky JE, Sommer DD. Smoking Cessation Interventions and Cessation Rates in the Oncology Population: Updated Systematic Review and Meta-Analysis.  Otolaryngol Head Neck Surg.  2013 Aug 149 (2): 200-11.
  • Strychowsky JE, Sommer DD, Gupta M. Incisionless Otoplasty: A retrospective review and outcomes analysis. Int J Pediatr Otorhinolaryngol. 2013 Jul; 77(7): 1123-7.
  • Banglawala S, Gill M, Sommer DD, Gupta M, Psaltis A, Schlosser RJ. Is Nasal Packing Necessary After Septoplasty?: A Meta-Analysis. Int Forum Allergy Rhinol. 2013 May; 3(5):418-24. 
  • Riggin L, Ramakrishna J, Sommer DD, Koren G.A 2013 Updated Systematic Review & Meta-Analysis of 36 Randomized Controlled Trials; No Apparent Effects of Non Steroidal Anti-inflammatory Agents on the Risk of Bleeding After Tonsillectomy. Clin Otolaryngol. 2013 Apr. 38(2): 115-29. 
  • Cheung K, Voineskos S, Avram R, Sommer DD. A Systematic Review of the Endoscopic Management of Orbital Floor Fractures. JAMA Facial Plast Surg. 2013 Mar 1;15(2):126-30. 
  • Khetani J, Madadi P, Sommer DD, Sistonen J, Reddy D, Ross C, Carleton B, Hayden C, Koren G.  Apnea in Young Children Treated with Opioids After Adenotonsillectomy for Obstructive Sleep Apnea Syndrome: A Prospective Study. Paediatr Drugs. 2012 Dec 1;14(6):411-5.
  • Sommer DD, Rotenberg B.  Systematic Evaluation of Sleep Apnea Websites on the Internet. Commentary. Journal of Otolaryngology / Head & Neck Surgery. 2012; 41(4):273.
  • Strychowsky JE, Sommer DD, Cohen N, Gupta, M, Nahlieli O. Sialendoscopy for the management of obstructive salivary gland disease: a systematic review and meta-analysis. Archives of Otolaryngology / Head and Neck Surgery. 2012;138(6):541-547. 
  • Sommer DD, Minet W, Singh S. Endoscopic Transnasal Drainage of Frontal Epidural Abscesses.Journal of Otolaryngology / Head & Neck Surgery. 2011; 40(5):401-406.                                                                                                
  • Nayan S, Gupta MK, Sommer DD.  Evaluating Smoking Cessation Interventions and Cessation Rates in Cancer Patients: A Systematic Review and Meta-Analysis.  ISRN Oncology. Volume 2011 July, Article ID 849023, 7 pages.
  • Strychowsky J,  Nayan S, Reddy K, Farrokhyar F, Sommer, D.  Purely endoscopic transsphenoidal surgery versus traditional microsurgery for resection of pituitary adenomas: A systematic review. Journal of Otolaryngology / Head & Neck Surgery.  2011 April; 40(2):175-185
  • Lui B, Boylan C, Aziz A, Sommer D, Nair P.  Paranasal sinus disease and sputum eosinophilia in prednisone dependent asthma.  Journal of Otolaryngology / Head & Neck Surgery.  2010 Dec;39(6):703-9
  • Lee A, Sommer DD, Reddy K, Gunnarsson T.  Endoscopic Transnasal Approach to the Cranio-Cervical Junction.  Skull Base. May 2010; 20(3): 199-205.
  • Nayan S, McLean J, Sommer D.  Thymic Cyst – A Fourth Branchial Cleft Anomaly. Laryngoscope. 2010 Jan; 120 (1) 100 - 102.
  • Shuster A, Gunnarsson T, Sommer D, Miller E. Pituitary Abscess: an unexpected diagnosis. Pediatric Radiology. 2010 Feb; 40(2) 219-222.
  • Sommer DD, Banglawala S. ACP journal club. Prednisolone, but not valacyclovir, reduced time to complete recovery of facial-nerve function in Bell palsy. Annals of Internal Medicine. 2009 Mar 17;150(6):JC3-12. 
  • Irish JC, Goldstein D, Sommer DD, Sommer LZ. Patient Perception of Risk Factors in Head and Neck Cancer:  Effect of an Educational Intervention.  Head & Neck. 2009 Mar;31(3):355-60.
  • Minet W, Sommer DD, Midia M, Yousuf K, Reddy K. A Retrospective Comparison of Endoscopic Assisted vs Purely Endoscopic Approach to Sellar Tumor Resection. Journal of Otolaryngology-Head And Neck Surgery. 2008 Dec;37(6):759-67.
  • Davids T, Sommer DD, Armstrong D.  A Survey of Current Perspectives on Laryngopharyngeal Reflux (LPR) among Canadian Otolaryngologists.  Journal of Otolaryngology-Head And Neck Surgery.  2008. 37(2):196-203.
  • Sommer DD.  Self-treatment after Epley procedure was effective for benign paroxysmal positional vertigo of the posterior semicircular canal. Evidence Based Med. 2006. 11: 78.
  • Yousuf K, Lui B, Lemckert R, Sommer D. Recurrent adult epiglottitis: contiguous spread from group A streptococcus lingual tonsillitis. Journal of Otolaryngology-Head And Neck Surgery. 2006 Feb;35(1):65-7.
  • Sommer D.D., Mendelsohn M.  Pitfalls of Non-Standardized Facial Photography in Facial Plastic Surgery Patients.  Plastic and Reconstructive Surgery. 2004 Jul;114(1):10-14.
  • Chan J., Irish J., Wood S.J., Sommer D., Brown D., Gullane P., O’Sullivan B.  Smoking Cessation in Patients Diagnosed with Head & Neck Cancer. Journal of Otolaryngology-Head And Neck Surgery. 2004 Apr;33(2):75-81.
  • Wellman MB, Sommer DD, Mckenna J.  Sensorineural Hearing Loss in Postmeningitic Children.  Otology Neurotology. 2003 Nov;24(6):907-12.
  • Forte V, Chait P, Sommer D. Endoscopic management of tracheal and esophageal strictures. Seminars in Pediatric Surgery. 2003 Feb;12(1):71-9.
  • Sommer D.D., Forte V.  Common Pediatric Indications for Referral to Otolaryngology.  The Canadian Journal of CME.  2002. March:14(3):120-122.
  • Sommer D.D., Forte V. Tracheobronchial Stents in the Management of Pediatric Major Airway Collapse.  Otolaryngologic Clinics of North America. 2000, Feb;33(1):163-177.
  • Dickstein J., Greenberg A., Kruger J., Robiscek A., Silverman J.A., Sommer L.Z., Sommer D.D., Volgyesi G.A., Iscoe S, Fisher J.A. PCO2 affects tracheal tone during apnea in anesthetized dogs. Journal of Applied Physiology. 1996 Sep;81(3):1184-1189.
  • Fisher J.A., Volgeysi G., Sommer D.D., Robiscek A., Fink A., Silverman J., Sommer L.Z. Dynamic Measurement of Tracheal Diameter in Dogs. Journal of Applied Physiology. 1995, Feb;78(2):388-393.
  • Sommer D.D., Forte V. Acute Upper Airway Obstruction in Children. The Canadian Journal of Diagnosis. 1994, Nov;11(11);85-97.
  • Sommer D.D., Freeman J.L. Bilateral Vocal Cord Paralysis Associated with Diabetes Mellitus:  Case Reports. Journal of Otolaryngology-Head And Neck Surgery. 1994; 23(3):169-71.
  • Sommer D.D., Fisher J.A., Ramcharan V., Marshal S., Vidic D.M. Improvised Automatic Lung Ventilation for Unanticipated Emergencies. Critical Care Medicine. 1994; 22(4):705-9.
  • Sommer D., Fisher J.A. 218 Improvised Automatic Lung Ventilation for Use in Disasters. Prehospital and Disaster Medicine, 1993; 8, pp S125-S125. doi:10.1017/S1049023X00048433.



  • M.D., University of Toronto
    Otolaryngology - Head and Neck Residency, University of Toronto
  • F.R.S.C. (C) 
    Facial Plastic Surgery Fellowship, Australasian Academy of Facial Plastic Surgery (Australia) 

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