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Dr. Krishnakumar T.

Professor, Department of Head & Neck Surgery, School of Medicine, Kochi

Qualification: DNB, MCh, MS
krishnakumart@aims.amrita.edu

Bio

Dr. Krishnakumar currently serves as Professor at the Department of Head and Surgery and Oncology at Amrita Institute of Medical Sciences (Amrita Hospital). He did his MBBS at T. D. Medical College, Alappuzha and obtained MS (ENT) from B.J. Medical College Pune in January 2002. During May 2002 – August 2005, he worked as a consultant ENT surgeon at KVM Hospital, Cherthala. Later, he joined Amrita Institute of Medical Sciences to obtain his MCh (Head and Neck Surgical Oncology) and successfully completed the same in June 2008. In July 2008, he joined Roswell Park Cancer Institute, Buffalo, New York for a two-year fellowship program in Head and Neck Surgical Oncology. During the first year of the fellowship program, Dr. Krishnakumar was actively involved in research projects on the development of newer photosensitizers for photodynamic therapy (PDT) for head and neck tumors. During the second year, he was exposed to the entire clinical aspects covering ablative and reconstructive head and neck surgery with exposure to endoscopic skull base surgery. After completing the fellowship program, he joined Amrita Hospital in August 2010 as Associate Professor.
Having over 17 years of clinical experience and 10 years of academic experience, he has presented and published papers in national and international forums. Won the Young Investigator Award, at the Indian Co-operative Oncology network. He has more than 40 publications in international journals. He is the Regional Editor (Asia Pacific) of the Journal of Craniomaxillofacial Trauma and Reconstruction (AOCMF) and is a journal reviewer of more than 10 international journals including The Laryngoscope, Clinical Otolaryngology, Head and Neck. Has written a book titled “Basic Concepts in Head and Neck Surgery and Oncology”.

 

Publications

Journal Article

Year : 2019

A Novel Surface Enhanced Raman Catheter for Rapid Detection, Classification, and Grading of Oral Cancer

Cite this Research Publication : Girish C. M., Dr. Subramania Iyer K., Dr. Krishnakumar T., GS, G., Dr. Manzoor K., and Shantikumar V Nair, “A Novel Surface Enhanced Raman Catheter for Rapid Detection, Classification, and Grading of Oral Cancer”, Advanced Healthcare Materials, vol. 8, no. 13:e1801557, 2019.

Publisher : Advanced Healthcare Materials

Year : 2018

Level V Clearance in Neck Dissection for Papillary Thyroid Carcinoma: A Need for Homogeneous Studies.

Cite this Research Publication : A. Jan Battoo, Sheikh, Z. Ahmad, Krishnakumar Thankappan, Mir, A. Wahid, and Haji, A. Gowhar, “Level V Clearance in Neck Dissection for Papillary Thyroid Carcinoma: A Need for Homogeneous Studies.”, Int Arch Otorhinolaryngol, vol. 22, no. 4, pp. 449-454, 2018.

Publisher : Int Arch Otorhinolaryngol

Year : 2015

Objective analysis of microtia reconstruction in Indian patients and modifications in management protocol

Cite this Research Publication : Sharma M, Dudipala RR, Mathew J, Wakure A, Thankappan K, Balasubramaniam D,Iyer S. Objective analysis of microtia reconstruction in Indian patients andmodifications in management protocol. Indian J Plast Surg. 2015 May-Aug;48(2):144-52.

Year : 2015

Pneumosinus Dilatans Helping Subcranial Resection in a Patient with Advanced Ethmoid Malignancy

Cite this Research Publication : Joseph ST, Thankappan K, Buggaveeti R, Iyer S. Pneumosinus Dilatans HelpingSubcranial Resection in a Patient with Advanced Ethmoid Malignancy. Craniomaxillofac Trauma Reconstr. 2015 Sep;8(3):218-20.

Year : 2015

Challenges in the Reconstruction of Bilateral Maxillectomy Defects

Cite this Research Publication : Shawn T. Joseph , Krishnakumar Thankappan, Rahul Buggaveeti , Mohit Sharma , Jimmy Mathew , Subramania Iyer, Challenges in the Reconstruction of Bilateral Maxillectomy Defects, Journal of Oral and Maxillofacial Surgery, 2015.

Publisher : Elsevier

Year : 2015

Easy and Safe Method for Facial Nerve Identification in Parotid Surgery

Cite this Research Publication : Joseph ST, Sharankumar S, Sandya CJ, Sivakumar V, Sherry P, Krishnakumar T, Subramania I. Easy and Safe Method for Facial Nerve Identification in ParotidSurgery. J Neurol Surg B Skull Base. 2015 Dec;76(6):426-31.

Publisher : Journal of Neurological Surgery Part B: Skull Base

Year : 2015

Anatomic Basis for an Algorithmic Approach for Free Fibula Flap Donor Side Selection in Composite Oro-Mandibular Defects

Cite this Research Publication : Mohit Sharma , Abhijeet Wakure , Krishnakumar Thankappan , Jimmy Mathew , Dayanand Jairaj , Raghuveer Reddy Dudipala , Subramania Iyer, Anatomic basis for an algorithmic approach for free fibula flap donor side selection in composite oro-mandibular defects, Indian Journal of Plastic Surgery .

Publisher : Indian Journal of Plastic Surgery

Year : 2014

Site-wise Differences in Adequacy of the Surgical resection Margins in Head and Neck Cancers

Cite this Research Publication : S. Vidhyadharan, Augustine, I., Kudpaje, A. S., Dr. Subramania Iyer K., and Dr. Krishnakumar T., “Site-wise Differences in Adequacy of the Surgical resection Margins in Head and Neck Cancers”, Indian journal of surgical oncology, vol. 5, no. 3, pp. 227–231, 2014.

Publisher : Indian journal of surgical oncology

Year : 2014

A Novel tumor: Specimen index for assessing adequacy of resection in early stage oral tongue cancer

Cite this Research Publication : Joseph S.T., Aravind T., Iyer S., Thankappan K. Comment on "A novel tumor: Specimen index for assessing adequacy of resection in early stage oral tongue cancer" by Montero P.H., Palmer F.L., Shuman A.G. et al. [Oral Oncol 2014;50(3):213-20]. Oral Oncol. 2014 Apr 20. pii: S1368-8375(14)00106-7.

Publisher : Oral Oncology

Year : 2013

Orbital Floor Reconstruction with Free Flaps after Maxillectomy

Cite this Research Publication : Leela Sampathirao, Sriprakash Duraisamy,Naveen Hedne,Mohit Sharma,Jimmy Mathew, Subramania Iyer-Krish, nakumar Thankappan, Orbital Floor Reconstruction with Free Flaps after Maxillectomy, Craniomaxillofacial Trauma & Reconstruction, 2013.

Year : 2013

Tracheoesophageal puncture site closure with single perforator-based deltopectoral flap

Cite this Research Publication : D. Balasubramanian, Dr. Subramania Iyer K., and Thankappan, K., “Tracheoesophageal puncture site closure with single perforator-based deltopectoral flap”, Head and Neck, vol. 35, pp. E60-E63, 2013.

Publisher : Head and Neck

Year : 2013

Tensor fascia lata-iliac crest-internal oblique free flap for composite orbito-maxillary defect with orbital exenteration

Cite this Research Publication : Subramania Iyer, Krishnakumar Thankappan,Moni A. Kuriakose,Leela Mohan C.S.R. Sampathirao, Jimmy Mathew, Mohit Sharma, Tensor fascia lata-iliac crest-internal oblique free flap for composite orbito-maxillary defect with orbital exenteration,Journal of Plastic, Reconstructive and Aesthetic Surgery.

Year : 2013

Selective neck dissection is effective in N1/N2 nodal stage oral cavity squamous cell carcinoma

Cite this Research Publication : A. Ja Battoo, Hedne, Nb, Ahmad, S. Zc, Thankappan, Kd, Iyer, Se, and Kuriakose, M. Af, “Selective neck dissection is effective in N1/N2 nodal stage oral cavity squamous cell carcinoma”, Journal of Oral and Maxillofacial Surgery, vol. 71, pp. 636-643, 2013.

Publisher : Journal of Oral and Maxillofacial Surgery

Year : 2013

Safety and efficacy of low molecular weight dextran (Dextran 40) in head and neck free flap reconstruction

Cite this Research Publication : Kiran Jayaprasad , Jimmy Mathew , Krishnakumar Thankappan , Mohit Sharma , Sriprakash Duraisamy , Sunil Rajan , Jerry Paul , Subramania Iyer, Safety and Efficacy of Low Molecular Weight Dextran (Dextran 40) in Head and Neck Free Flap Reconstruction, Journal of Reconstructive Microsurgery, Oral Oncology. 2013 May 1;49:S146.

Year : 2013

Propeller flaps in the closure of free fibula flap donor site skin defects

Cite this Research Publication : M. Sharma, Balasubramanian, D., Thankappan, K., Sampathirao, C. L., Mathew, J., Chavre, S., and Dr. Subramania Iyer K., “Propeller flaps in the closure of free fibula flap donor site skin defects”, Annals of Plastic Surgery, vol. 71, pp. 76-79, 2013.

Year : 2013

Practical technique for predictable wedge osteotomies during microvascular free fibula reconstruction after mandibulectomy

Cite this Research Publication : Sharma M., Balasubramanian D., Thankappan K., Mathew J., Jayaprasad K., Iyer S. Practical technique for predictable wedge osteotomies during microvascular free fibula reconstruction after mandibulectomy. J Reconstr Microsurg. 2013 Oct;29(8):555-8.

Year : 2013

Oncologic and functional outcome of the preserved eye in malignant sinonasal tumors

Cite this Research Publication : Rajapurkar M., Thankappan K., Sampathirao L.M., Kuriakose M.A., Iyer S. Oncologic and functional outcome of the preserved eye in malignant sinonasal tumors. Head Neck. 2013 Oct;35(10):1379-84.

Publisher : Head and Neck

Year : 2013

Cricotracheal reconstruction with free radial forearm flap and titanium mesh

Cite this Research Publication : D. Balasubramanian, Thankappan, K., Shetty, S., Jayaprasad, K., Mathew, J., and Dr. Subramania Iyer K., “Cricotracheal reconstruction with free radial forearm flap and titanium mesh”, Head and Neck, vol. 35, pp. E178-E180, 2013.

Publisher : Head and Neck

Year : 2012

Intraoral schwannoma – A report of two cases

Cite this Research Publication : Kurup S., Thankappan K., Krishnan N., Nair P.P. Intraoral schwannoma--a report oftwo cases. BMJ Case Rep. 2012 Jul 9; 2012. pii: bcr1220115389.

Year : 2012

Verrucous lesions of the oral cavity treated with surgery: Analysis of clinico-pathologic features and outcome

Cite this Research Publication : A. Sadasivan, Dr. Krishnakumar T., Rajapurkar, M., Shetty, S., Sreehari, S., Dr. Subramania Iyer K., and , “Verrucous lesions of the oral cavity treated with surgery: Analysis of clinico-pathologic features and outcome”, Contemporary clinical dentistry, vol. 3, p. 60, 2012.

Publisher : Medknow Publications

Year : 2012

Reconstructive indications of simultaneous double free flaps in the head and neck: A case series and literature review

Cite this Research Publication : Da Balasubramanian, Thankappan, Ka, Kuriakose, M. Ab, Duraisamy, Sa, Sharan, Ra, Mathew, Ja, Sharma, Ma, and Iyer, Sa, “Reconstructive indications of simultaneous double free flaps in the head and neck: A case series and literature review”, Microsurgery, vol. 32, pp. 423-430, 2012.

Year : 2012

Isolated skip nodal metastasis is rare in T1 and T2 oral tongue squamous cell carcinoma

Cite this Research Publication : Da Balasubramanian, Thankappan, Ka, Battoo, A. Ja, Rajapurkar, Ma, Kuriakose, M. Ab, and Iyer, Sa, “Isolated skip nodal metastasis is rare in T1 and T2 oral tongue squamous cell carcinoma”, Otolaryngology - Head and Neck Surgery (United States), vol. 147, pp. 275-277, 2012.

Publisher : Otolaryngology - Head and Neck Surgery (United States)

Year : 2012

Flap hitching technique to the teeth after oral cancer resection

Cite this Research Publication : Ka Thankappan, Iyer, Sa, Rajapurkar, Ma, Sharma, Ma, and Subash, Pb, “Flap hitching technique to the teeth after oral cancer resection”, Journal of Surgical Technique and Case Report, vol. 4, pp. 19-21, 2012.

Year : 2012

Efficacy of per oral access in the surgical management of T2/T3 oral cavity squamous cell carcinoma

Cite this Research Publication : A. Ja Battoo, Thankappan, Kb, Ahmad, S. Zb, Hedne, Nc, Balasubramanian, Db, Trivedi, Nc, Iyer, Sb, and Kuriakose, M. Ac, “Efficacy of per oral access in the surgical management of T2/T3 oral cavity squamous cell carcinoma”, Otolaryngology - Head and Neck Surgery (United States), vol. 147, pp. 1069-1075, 2012.

Publisher : Otolaryngology - Head and Neck Surgery (United States)

Year : 2012

Basaloid squamous cell carcinoma of the larynx-A systematic review

Cite this Research Publication : K. Thankappan, “Basaloid squamous cell carcinoma of the larynx-A systematic review”, Auris Nasus Larynx, vol. 39, pp. 397-401, 2012.

Publisher : Auris Nasus Larynx

Year : 2011

Intraoperative Transillumination to Determine the Extent of Frontal Sinus in Subcranial Approach to Anterior Skull Base

Cite this Research Publication : Sharan R., Thankappan K., Iyer S., Panicker D., Kuriakose M.A. Intraoperative transillumination to determine the extent of frontal sinus in subcranial approach to anterior skull base. Skull Base, 2011 Mar;21(2):71-4.

Year : 2011

Lateral arm free flap for oral tongue reconstruction: An analysis of surgical details, morbidity, and functional and aesthetic outcome

Cite this Research Publication : Ka Thankappan, Kuriakose, M. Aa, Chatni, S. Sa, Sharan, Ra, Trivedi, N. Pa, Vijayaraghavan, Sb, Sharma, Mb, and Iyer, Sab, “Lateral arm free flap for oral tongue reconstruction: An analysis of surgical details, morbidity, and functional and aesthetic outcome”, Annals of Plastic Surgery, vol. 66, pp. 261-266, 2011.

Year : 2010

Microvascular free tissue transfer after prior radiotherapy in head and neck reconstruction – A review

Cite this Research Publication : K. Thankappan, “Microvascular free tissue transfer after prior radiotherapy in head and neck reconstruction - A review”, Surgical Oncology, vol. 19, pp. 227-234, 2010.

Publisher : Surgical Oncology

Year : 2009

Recommended organ preservation strategy for T2 unfavorable glottis cancer

Cite this Research Publication : Thankappan K. Recommended organ preservation strategy for T2 unfavorable glottis cancer. J Clin Oncol. 2007 Feb 20;25(6):735-6.

Year : 2009

Photodynamic Therapy for Head and Neck Dysplasia and Cancer

Cite this Research Publication : Rigual N.R., Thankappan K., Cooper M., Sullivan M.A., Dougherty T., Popat S.R., Loree T.R., Biel M.A., Henderson B. Photodynamic therapy for head and neck dysplasia and cancer. Arch Otolaryngol Head Neck Surg. 2009 Aug;135(8):784-8

Year : 2009

Vascularised fibula osteocutaneous flap for cervical spinal and posterior pharyngeal wall reconstruction

Cite this Research Publication : Thankappan K., Duarah S., Trivedi N.P., Panikar D., Kuriakose M.A., Iyer S. Vascularised fibula osteocutaneous flap for cervical spinal and posterior pharyngeal wall reconstruction. Indian J Plast Surg. 2009 Jul;42(2):252-4.

Year : 2009

Free radial forearm adiposo-fascial flap for inferior maxillectomy defect reconstruction

Cite this Research Publication : Ka Thankappan, Trivedi, N. Pa, Sharma, Ma, Kuriakose, M. Aa, and Iyer, Sab, “Free radial forearm adiposo-fascial flap for inferior maxillectomy defect reconstruction”, Indian Journal of Plastic Surgery, vol. 42, pp. 100-103, 2009.

Publisher : Indian Journal of Plastic Surgery

Year : 2009

Esthetic and Anatomic Basis of Modified Lateral Rhinotomy Approach

Cite this Research Publication : Ka Thankappan, Sharan, Rb, Iyer, Sc, and Kuriakose, M. Ad, “Esthetic and Anatomic Basis of Modified Lateral Rhinotomy Approach”, Journal of Oral and Maxillofacial Surgery, vol. 67, pp. 231-234, 2009.

Publisher : Journal of Oral and Maxillofacial Surgery

Year : 2009

Management of clinically negative neck for the patients with head and neck squamous cell carcinomas in the modern era

Cite this Research Publication : K. Thankappan, “Comment on "Management of clinically negative neck for the patients with head and neck squamous cell carcinomas in the modern era" (Bar Ad V, Chalian A. Oral Oncol 2008;44:817-22)”, Oral Oncology, vol. 45, p. 192, 2009.

Publisher : Oral Oncology

Year : 2008

Prognostic factors of concurrent chemo-radiotherapy in head and neck cancers

Cite this Research Publication : Thankappan K., S. V. Rugmini, R. F. Cohen, B. Sunil, J. Samuel, T. K. Padmanabhan, K. Pavithran, K. R. Sundaram, S. Iyer, M. A. Kuriakose. Prognostic factors of concurrent chemo-radiotherapy in head and neck cancers. (Abstract) Journal of Clinical Oncology, 2007 ASCO Annual Meeting Proceedings Part I. Vol 25, No. 18S (June 20 Supplement), 2007: 16527.

Year : 2008

Stomaplasty-anterior advancement flap and lateral splaying of trachea

Cite this Research Publication : Trivedi N.P., Patel D., Thankappan K., Iyer S., Kuriakose M.A. Stomaplasty-anterior advancement flap and lateral splaying of trachea, a simple and effective technique. J Postgrad Med. 2008 Jan- Mar; 54(1):21-4.

Year : 2008

In Reference to Classification and Management of Tracheoesophageal and Tracheopharyngeal Fistulas After Laryngectomy

Cite this Research Publication : Duarah S., Thankappan K., Sharan R., Kekatpure V. In reference to classification and management of tracheoesophageal and tracheopharyngeal fistulas after laryngectomy. Laryngoscope. 2008 May;118(5):944.

Year : 2008

Lymph node status cannot be ignored in survival analysis of laryngeal cancer

Cite this Research Publication : Chatni S.S., Thankappan K. Lymph node status cannot be ignored in survival analysis of laryngeal cancer. Arch Otolaryngol Head Neck Surg. 2008 Jul;134(7):786; author reply 786-7

Year : 2008

Three-Dimensional Computed Tomography-Based Contouring of a Free Fibula Bone Graft for Mandibular Reconstruction

Cite this Research Publication : Thankappan K., Trivedi N.P., Subash P., Pullara S.K., Peter S., Kuriakose M.A., Iyer S. Three-dimensional computed tomography-based contouring of a free fibula bone graft for mandibular reconstruction. J Oral Maxillofac Surg. 2008 Oct;66(10):2185-92.

Publisher : Journal of Oral and Maxillofacial Surgery

Year : 2008

Comparison of quality of life in advanced laryngeal cancer patients after concurrent chemoradiotherapy vs total laryngectomy

Cite this Research Publication : N. P. Trivedi, Swaminathan, D. K., Thankappan, K., Chatni, S., Kuriakose, M. A., and Dr. Subramania Iyer K., “Comparison of quality of life in advanced laryngeal cancer patients after concurrent chemoradiotherapy vs total laryngectomy”, Otolaryngology - Head and Neck Surgery, vol. 139, pp. 702-707, 2008.

Publisher : Otolaryngology - Head and Neck Surgery

Year : 2007

In vitro cellular uptake and dimerization of signal transducer and activator of transcription-3 (STAT3) identify the photosensitizing and imaging-potential of isomeric photosensitizers derived from chlorophyll-a and bacteriochlorophyll-a

Cite this Research Publication : Avinash Srivatsan, Yanfang Wang, Penny Joshi, Munawwar Sajjad, Yihui Chen, Chao Liu, Krishnakumar Thankappan, Joseph R Missert, Erin Tracy, Janet Morgan, Nestor Rigual, Heinz Baumann, Ravindra Pandey "In vitro cellular uptake and dimerization of signal transducer and activator of transcription-3 (STAT3) identify the photosensitizing and imaging-potential of isomeric photosensitizers derived from chlorophyll-a and bacteriochlorophyll-a. J Med Chem. 2011 Oct 13;54(19):6859-73

Year : 2007

3D CT – based Contouring of Free Fibula Bone Graft for Mandibular Reconstruction

Cite this Research Publication : R. Veeraraghavan, M. Abraham Kuriakose, S. Iyer, T. Krishnakumar, L. Rao, P. Ushas 3D CT-based contouring of free fibula bone graft for mandibular reconstruction (Abstract) International Journal of Oral and Maxillofacial Surgery, Volume 36, Issue 11, Pages 1107-1107.

Publisher : International Journal of Oral Maxillofacial Surgery

Year : 2002

Malignant Otitis Externa – Our Experience

Cite this Research Publication : Thankappan K., Sardesai R.B. Malignant Otitis Externa – Our Experience. The Indian Journal of Otolaryngology and Head and Neck Surgery, Vol.54, No. 2,April – June 2002

Qualification
  • MS (ENT)
  • DNB (Otorhinolarygology)
  • MCh (Head and Neck Surgical Oncology)
  • Fellow, American Head and Neck Society
  • Fellowship in Head and Neck, Skull base and Reconstructive Surgery – Yonsei University, South Korea
  • Fellowship in Robotic Thyroid, Head and Neck, Transoral Surgery – Roswell Park Cancer Center, Buffalo, NY, USA
Area of Expertise
  • Head & Neck Surgical Oncology
  • Reconstructive Microsurgery
  • Skull base Surgery
  • Endoscopic Thyroidectomy
  • Robotic Thyroidectomy and Neck Surgery
  • Trans-oral Robotic Surgery
  • Sialendoscopy
  • Laser Laryngeal Surgery
Achievements
  • Delivered Dr. M. N. Mahore Oration, VENTCON 2013 Nagpur. Annual conference of the Association of Otolaryngologists of India, Vidarbha branch, on ‘What is new in Head and Neck Cancer., 2013.
  • Received ICMR International Travel Grant. Attended 8th International Conference of Head and Neck Cancer, Toronto, Canada during July 21 – 25, 2012.
  • Received DST International Travel Grant. Attended the joint meeting of the World Federation of Skull Base Societies and the European Skull Base Society held in Brighton, United Kingdom during May 16 – 19, 2012.
  • ACORD Fellowship. Attended Australia and Asia Pacific Research Development Workshop, Queensland, Australia during Sept 12 – 17, 2010
  • Dr. M. A. Gopalakrishnan Gold Medal for the best paper. Distraction Osteogenesis in the management of Craniofacial Anomalies. Presented at Kerala State Conference of Otorhinolaryngology, Manjeri, India, October 2005.
  • FHNO Medal for the second best paper. 3D-CT Based Contouring of Free Fibula Bone Graft in Mandibular, 2005.
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