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• Airway
• Coblation
• Cricopharyngeal Muscle Dysfunction
• Endoscopic Sinus Surgery

  Endoscopic Sinus Surgery for Children

  Endoscopic sinus surgery is a procedure to open the passages of the nose and sinuses. It is done to treat long-term (chronic) sinus infections. An ear, nose, and throat specialist (ENT) does the surgery.
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• Epiglottoplasty
• Hypopharyngeal Cancer
• Laryngeal Cancer

  Laryngeal Cancer: Introduction

  Laryngeal cancer occurs when normal cells change and grow uncontrollably. These cells form a cancerous tumor in the larynx or voice box, which is located in your neck.
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• Larynx Disorder
• Laser
• Local and Regional Flap Reconstruction of the Neck
• Oncology

  Cancer Overview

  Cancer cells don't function properly, and they can spread to many areas of the body. Tumors are clusters of cells that are capable of growing and dividing uncontrollably; their growth is not regulated.
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• Parathyroid Cancer
• Parathyroid Tumor (Benign)

  Parathyroid Tumor

  The parathyroid glands are 4 small, pea-sized glands located in your neck near the thyroid gland. A parathyroid tumor is a growth inside a parathyroid gland. Most parathyroid tumors are benign (noncancerous) adenomas. Parathyroid cancers are very rare.
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• Parotid Gland Surgery
• Robotic Surgery
• Septum Deviated / Perforated

  Deviated Septum

  A wall of cartilage divides the nose into 2 separate chambers. It’s called the nasal septum. A deviated septum is when this wall is shifted away from the midline. This may cause congestion, problems with breathing, or nasal discharge.
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• Spasmodic Dysphonia

  Spasmodic Dysphonia

  Spasmodic dysphonia is a voice disorder. It causes involuntary spasms in the muscles of the voice box or larynx.  This causes the voice to break, and have a tight, strained, or strangled sound.
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• Speech Disorders

  Speech and Voice Disorders

  Many speech and voice disorders require clinical care by a physician or other health care professional. Some of the conditions include Fluency Disorder, Spasmodic Dysphonia, Stuttering, Voice Disorders.
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• Swallowing Problems
• Thyroid Cancer

  Thyroid Cancer: Introduction

  Thyroid cancer starts in the gland called the thyroid. It occurs when cells in the thyroid gland grow out of control.
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• Thyroid Tumor (Benign)

  Parathyroid Tumor

  The parathyroid glands are 4 small, pea-sized glands located in your neck near the thyroid gland. A parathyroid tumor is a growth inside a parathyroid gland. Most parathyroid tumors are benign (noncancerous) adenomas. Parathyroid cancers are very rare.
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• Transoral Laser Microsurgery

  Laryngeal Cancer: Treatment Choices

  There are various treatment choices for laryngeal cancer. Which one may work best for you? It depends on a number of factors. These include the size, location, and stage of your cancer.
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• Upper Esophageal Sphincter Dysfunction
• Voice Disorders

  Voice Disorders

  A voice disorder is when a person has a problem with pitch, volume, tone, and other qualities of their voice. These problems occur when the vocal cords don't vibrate normally.
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His main focus in the Laryngeal Physiology Laboratory is evaluation and treatment of voice problems related to laryngeal posture and vibration, including study of laryngeal asymmetries such as vocal fold paresis and paralysis, as well as vocal fold vibratory abnormalities related to scar, tissue loss, vocal fold neoplasms, and tension asymmetry. His current research focus in the Swallowing Disorders Center is prevention dysphagia in patients undergoing chemoradiation therapy for head and neck cancer.

1. Chhetri DK, Neubauer J, Berry DA. Neuromuscular control of fundamental frequency and glottal posture at phonation onset. J Acoust Soc Am. 2012 Feb;131(2):1401-12.
2. Vira D, DeConde A, Chhetri DK. Endoscopic management of supraglottic laryngopharyngeal stenosis. Otolaryngol Head Neck Surg. 2012 Apr;146(4):611-3.
3. Sidell D, Lai C, Bhuta S, Barnes L, Chhetri DK. Malignant phosphaturic mesenchymal tumor of the larynx. Laryngoscope. 2011 Sep;121(9):1860-3.
4. Sidell D, Chhetri DK. CO2 laser ablation and balloon dilation for acquired nasopharyngeal stenosis: a novel technique. Laryngoscope. 2011 Jul;121(7).
5. Chhetri DK, Berke GS. Injection of cultured autologous fibroblasts for human vocal fold scars. Laryngoscope. 2011 Apr;121(4):785-92.
6. Chhetri DK, Mendelsohn AH. Hyaluronic acid for the treatment of vocal fold scars. Curr Opin Otolaryngol Head Neck Surg. 2010 Dec;18(6):498-502.
7. Chhetri DK, Neubauer J, Berry DA. Graded activation of the intrinsic laryngeal muscles for vocal fold posturing. J Acoust Soc Am. 2010 Apr;127(4):EL127-33.
8. Long JL, Neubauer J, Zhang Z, Zuk P, Berke GS, Chhetri DK. Functional testing of a tissue-engineered vocal fold cover replacement. Otolaryngol Head Neck Surg. 2010 Mar;142(3):438-40.
9. Chhetri DK, Zhang Z, Neubauer J. Measurement of Young's modulus of vocal folds by indentation. J Voice. 2011 Jan;25(1):1-7. Epub 2010 Feb 19.
10. Sidell D, Shamouelian D, Erman A, Gerratt BR, Chhetri D. Improved tracheoesophageal prosthesis sizing in office-based tracheoesophageal puncture. Ann Otol Rhinol Laryngol. 2010 Jan;119(1):37-41.
11. Sidell D, Ghadiali M, Chhetri DK. nsedated office-based tracheoesophageal puncture using a novel guidewire technique. Otolaryngol Head Neck Surg. 2010 Feb;142(2):284-5.
12. Long JL, Zuk P, Berke GS, Chhetri DK. Epithelial differentiation of adipose-derived stem cells for laryngeal tissue engineering. Laryngoscope. 2010 Jan;120(1):125-31.
13. Joo D, Duarte VM, Ghadiali MT, Chhetri DK. Recovery of vocal fold paralysis after cardiovascular surgery. Laryngoscope. 2009 Jul;119(7):1435-8.
14. Lotfizadeh A, Chhetri DK. Viral supraglottitis in an adult. Ear Nose Throat J. 2009 Feb;88(2):768-70.
15. Chhetri DK, Berke GS, Lotfizadeh A, Goodyer E. Control of vocal fold cover stiffness by laryngeal muscles: a preliminary study. Laryngoscope. 2009 Jan;119(1):222-7.
16. Smith JE, Suh JD, Erman A, Nabili V, Chhetri DK, Blackwell KB. Risk factors predicting aspiration after free flap reconstruction of oral cavity and oropharyngeal defects. Arch Otolaryngol Head Neck Surg. 2008 Nov;134(11):1205-8.
17. Jahan-Parwar B, Chhetri DK, Ye M, Hart S, Berke GS. Hylan B gel restores structure and function to laser-ablated canine vocal folds. Ann Otol Rhinol Laryngol. 2008 Sep;117(9):703-7.
18. Joo D, Chhetri DK, Wang MB. Endoscopic removal of juvenile nasopharyngeal angiofibromas: a video presentation. Laryngoscope. 2008 Jun;118(6):e1-3.
19. Cohen M, Nabili V, Chhetri DK. Palatal perforation from cocaine abuse. Ear Nose Throat J. 2008 May;87(5):262.
20. Chhetri DK, Merati AL, Blumin JH, Sulica L, Damrose EJ, Tsai VW. Reliability of the perceptual evaluation of adductor spasmodic dysphonia. Ann Otol Rhinol Laryngol. 2008 Mar;117(3):159-65.
21. Berke GS, Neubauer J, Berry DA, Ye M, Chhetri DK. Ex vivo perfused larynx model of phonation: preliminary study. Ann Otol Rhinol Laryngol. 2007 Nov;116(11):866-70.
22. Cohen M, Chhetri DK, Head C. Isolated uvulitis. Ear Nose Throat J. 2007 Aug;86(8):462, 464.
23. Tsai V, Celmer A, Berke GS, Chhetri DK. Videostroboscopic findings in unilateral superior laryngeal nerve paralysis and paresis. Otolaryngol Head Neck Surg. 2007 Apr;136(4):660-2.
24. Luu Q, Tsai V, Mangunta V, Berke GS, Chhetri DK. Safety of percutaneous injection of bovine dermal crosslinked collagen for glottic insufficiency. Otolaryngol Head Neck Surg. 2007 Mar;136(3):445-9.

• Full Time Faculty Teaching Award in the Division of Head and Neck Surgery, 2006
• Young Faculty or Practitioner Award, Annual meeting of the American Laryngological Association (ALA), Boca Raton, FL, May 2005
• Third Place Prize in Basic Clinical Research, Annual meeting of the American Academy of Otolaryngology; Head and Neck Surgery (AAO-HNS), San Diego, CA, September 2002
• National Institutes of Health (NIH), NIDCD R01 Grant "Neuromuscular Control of the Larynx"

Medical Education