Philip A, Rajan Sundaresan V, George P, Dash S, Thomas R, Job A, Anand VK. A reclusive foreign body in the airway: a case report and a literature review. Case Rep Otolaryngol. 2013;2013:347325. doi: 10.1155/2013/347325. Epub 2013 Nov 7. PMID: 24312739; PMCID: PMC3838836.

Philip A, Thomas R, Job A, Sundaresan VR, Anandan S, Albert RR. Effectiveness of 7.5 percent povidone iodine in comparison to 1 percent clotrimazole with lignocaine in the treatment of otomycosis. ISRN Otolaryngol. 2013 Jul 25;2013:239730. doi: 10.1155/2013/239730. PMID: 23984100; PMCID: PMC3747501.

Emerson P, Philip A, Varghese GM, Thomas R. Tuberculous osteomyelitis of the hyoid bone: a case report. Case Rep Otolaryngol. 2013;2013:549564. doi: 10.1155/2013/549564. Epub 2013 Mar 12. PMID: 23573445; PMCID: PMC3610351.

Thomas R, Job A. Hearing loss among prison inmates in India - a pilot study. Indian J Otolaryngol Head Neck Surg. 2009 Jun;61(2):105-8. doi: 10.1007/s12070-009-0042-4. Epub 2009 Apr 27. PMID: 23120615; PMCID: PMC3450002.

Sundaresan R, Varghese L, Thomas R, Joy N. MALT Lymphoma- An Uncommon Tumour In The Larynx. National Journal of Otorhinolaryngology and Head & Neck Surgery, Vol. 1(10) No. 1, April 2013

Gandham EJ, Sundaresan R, Thomas R, Chacko AG. A novel nasoseptal flap harvesting technique in revision expanded endoscopic transsphenoidal approaches. Neurol India. 2017 Jan-Feb;65(1):129-133. doi: 10.4103/0028-3886.198214. PMID: 28084257.

Philip A, Rajan Sundaresan V, George P, Dash S, Thomas R, Job A, Anand VK. A reclusive foreign body in the airway: a case report and a literature review. Case Rep Otolaryngol. 2013;2013:347325. doi: 10.1155/2013/347325. Epub 2013 Nov 7. PMID: 24312739; PMCID: PMC3838836.

Philip A, Thomas R, Job A, Sundaresan VR, Anandan S, Albert RR. Effectiveness of 7.5 percent povidone iodine in comparison to 1 percent clotrimazole with lignocaine in the treatment of otomycosis. ISRN Otolaryngol. 2013 Jul 25;2013:239730. doi: 10.1155/2013/239730. PMID: 23984100; PMCID: PMC3747501.

Emerson P, Philip A, Varghese GM, Thomas R. Tuberculous osteomyelitis of the hyoid bone: a case report. Case Rep Otolaryngol. 2013;2013:549564. doi: 10.1155/2013/549564. Epub 2013 Mar 12. PMID: 23573445; PMCID: PMC3610351.

Thomas R, Job A. Hearing loss among prison inmates in India - a pilot study. Indian J Otolaryngol Head Neck Surg. 2009 Jun;61(2):105-8. doi: 10.1007/s12070-009-0042-4. Epub 2009 Apr 27. PMID: 23120615; PMCID: PMC3450002.

Sundaresan R, Varghese L, Thomas R, Joy N. MALT Lymphoma- An Uncommon Tumour In The Larynx. National Journal of Otorhinolaryngology and Head & Neck Surgery, Vol. 1(10) No. 1, April 2013

Gandham EJ, Sundaresan R, Thomas R, Chacko AG. A novel nasoseptal flap harvesting technique in revision expanded endoscopic transsphenoidal approaches. Neurol India. 2017 Jan-Feb;65(1):129-133. doi: 10.4103/0028-3886.198214. PMID: 28084257.

Thomas R, Girishan S, Chacko AG. Endoscopic Transmaxillary Transposition of Temporalis Flap for Recurrent Cerebrospinal Fluid Leak Closure. J Neurol Surg B Skull Base. 2016 Dec;77(6):445-448. doi: 10.1055/s-0036-1581065. Epub 2016 Mar 31. PMID: 27857869; PMCID: PMC5112164.

Gandham EJ, Sundaresan R, Thomas R, Chacko AG. A novel nasoseptal flap harvesting technique in revision expanded endoscopic transsphenoidal approaches. Neurol India. 2017 Jan-Feb;65(1):129-133. doi: 10.4103/0028-3886.198214. PMID: 28084257.

Jonathan GE, Sarkar S, Singh G, Mani S, Thomas R, Chacko AG. A randomized controlled trial to determine the role of intraoperative lumbar cerebrospinal fluid drainage in patients undergoing endoscopic transsphenoidal surgery for pituitary adenomas. Neurol India. 2018 Jan-Feb;66(1):133-138. doi: 10.4103/0028-3886.222823. PMID: 29322972.

Kishore R, Kisku SMC, Thomas RJ, Jeenipalli SK. Laparoscopic cholangiogram in biliary atresia: a refinement in the gallbladder hitch technique. Pediatr Surg Int. 2018 Apr;34(4):395-398. doi: 10.1007/s00383-018-4236-2. Epub 2018 Feb 9. PMID: 29427256.

Mani S, Das S, Thomas R, Michael RC. Metastasizing Pleomporphic Adenoma - Case reports and review of literature. South Asian J Cancer. 2019 Apr-Jun;8(2):126. doi: 10.4103/sajc.sajc_19_19. PMID: 31069196; PMCID: PMC6498715.

Goyal-Honavar A, Sarkar S, Asha HS, Kapoor N, Thomas R, Balakrishnan R, Chacko G, Chacko AG. Impact of Experience on Outcomes After Endoscopic Transsphenoidal Surgery for Acromegaly. World Neurosurg. 2021 Jul;151:e1007-e1015. doi: 10.1016/j.wneu.2021.05.030. Epub 2021 May 21. PMID: 34023462.

Stephen S, Subashini B, Thomas R, Philip A, Sundaresan R. Skull Base Osteomyelitis Caused by an Elegant Fungus. J Assoc Physicians India. 2016 Feb;64(2):70-71. PMID: 27730788.

Thomas R, Girishan S, Chacko AG. Endoscopic Transmaxillary Transposition of Temporalis Flap for Recurrent Cerebrospinal Fluid Leak Closure. J Neurol Surg B Skull Base. 2016 Dec;77(6):445-448. doi: 10.1055/s-0036-1581065. Epub 2016 Mar 31. PMID: 27857869; PMCID: PMC5112164.

Thomas R, Chacko AG. Principles in Skull Base Reconstruction following Expanded Endoscopic Approaches. J Neurol Surg B Skull Base. 2016 Aug;77(4):358-63. doi: 10.1055/s-0036-1579543. Epub 2016 Feb 26. PMID: 27441162; PMCID: PMC4949070.

Chiramel GK, Chacko BR, Thomas R, Jebakumar D. A rare and unusual occurrence of rhabdomyosarcoma arising from the larynx. Indian J Cancer. 2015 Jan-Mar;52(1):125-6. doi: 10.4103/0019-509X.175575. PMID: 26837999.

Mani S, Thomas R, Mathew R, Michael R. Langerhan's cell Histiocytosis of Sphenoid Sinus causing Vision Loss: A Case Report. JNMA J Nepal Med Assoc. 2019 Jul-Aug;57(218):281-284. PMID: 32323665.

Riju J, Ahamed S, Thomas R, Telugu RB. Ectomesenchymal chondromyxoid tumour: an uncommon characteristic tumour of the anterior tongue. BMJ Case Rep. 2019 Oct 25;12(10):e231278. doi: 10.1136/bcr-2019-231278. PMID: 31653634; PMCID: PMC6827728.

Upreti G, Thomas R, Milton S, Sundaresan R. Bilateral juvenile nasopharyngeal angiofibroma with hepatoblastoma and horseshoe kidney: Implication of common molecular signaling? Int Forum Allergy Rhinol. 2022 Jun 11. doi: 10.1002/alr.23038. Epub ahead of print. PMID: 35689607.

Tyagi AK, Kurien M, Irodi A, Varghese AM, Holla SJ, Thomas R. Meet the Lacrimal Sac: Endoscopic Surgeons' Road Map. Indian J Otolaryngol Head Neck Surg. 2021 Mar;73(1):18-24. doi: 10.1007/s12070-020-01848-3. Epub 2020 Apr 8. PMID: 33643880; PMCID: PMC7881951.

Upreti, G., Jonathan, G., Sundaresan, R. . Tension Pneumocephalus: A Potentially Fatal Complication of Expanded Endoscopic Endonasal Approach. Indian J Otolaryngol Head Neck Surg 75, 2523–2528 (2023). https://doi.org/10.1007/s12070-023-03802-5

Goyal-Honavar A, Sarkar S, Asha HS, Kapoor N, Thomas R, Balakrishnan R, Chacko G, Chacko AG. Impact of Experience on Outcomes After Endoscopic Transsphenoidal Surgery for Acromegaly. World Neurosurg. 2021 Jul;151:e1007-e1015. doi: 10.1016/j.wneu.2021.05.030. Epub 2021 May 21. PMID: 34023462.

Mani S, Mathew J, Thomas R, Michael RC. Feasibility of Transoral Approach to Accessory Parotid Tumors. Cureus. 2019 Feb 4;11(2):e4003. doi: 10.7759/cureus.4003. PMID: 30989012; PMCID: PMC6447140.

Edmond Jonathan Gandham , Abhijit Goyal-Honavar  , Latif Rajesh Johnson , Ankush Gupta , Regi Thomas  , Suresh Devasahayam , Krishna Prabhu , Ari George Chacko A Negative-Pressure Face-Mounted System Reduces Aerosol Spread during Endonasal Endoscopic Surgery J Neurol Surg B Skull Base DOI: 10.1055/a-1774-6091

Upreti G, Thomas R, Sundaresan R, Rebekah G, Rupali P, Jasper A. Clinico-Radiological Evaluation for Longitudinal Assessment in Central Skull Base Osteomyelitis: Proposal of Novel Scoring System. Indian J Otolaryngol Head Neck Surg. 2023 Dec;75(4):3553-3564. doi: 10.1007/s12070-023-03956-2. Epub 2023 Jul 4. PMID: 37974699; PMCID: PMC10646027.

Johnson HE, Sunny SS, Hephzibah J, Thomas R, Sundaresan R. 68 Ga-Citrate PET/CT Imaging in the Diagnosis of Skull Base Osteomyelitis and Its Usefulness in the Assessment of Treatment Response. Clin Nucl Med. 2024 Feb 1;49(2):e54-e57. doi: 10.1097/RLU.0000000000004904. Epub 2023 Dec 22. PMID: 38141005.

Ahamed S, Samson D, Sundaresan R, Balasubramanya B, Thomas R. Double Blinded Randomized Controlled Trial Comparing Budesonide and Saline Nasal Rinses in the Post-operative Management of Chronic Rhinosinusitis. Indian J Otolaryngol Head Neck Surg. 2024 Feb;76(1):408-413. doi: 10.1007/s12070-023-04173-7. Epub 2023 Sep 1. PMID: 38440477; PMCID: PMC10909031.

Sahu, Shalini; Mathews, Miria; Sara, Katti Blessi; Thomas, Habie; Rebekah, Grace J; Irodi, Aparna; Vediappan, Rajan Sundaresan1; Thomas, Regi1. Soft-tissue Imaging Modalities and Their Clinical Relevance in Rhino-orbital-cerebral Mucormycosis. Current Medical Issues 23(4):p 268-273, Oct–Dec 2025. DOI: 10.4103/cmi.cmi_57_25

Management Challenges of Internal Carotid Artery Pseudoaneurysm in Skull Base Osteomyelitis.Arun G. Karthat Katti B. Sara Miria Mathews Nandu Sukumaran Santhosh B. Kannan Bharathy Aeesha Tasneem Abi Manesh Shyamkumar N. Keshava Rajan Sundaresan Regi Thomas.J Neurol Surg B Skull Base DOI: 10.1055/a-2607-5667

Sara KB, Thomas Z, Kumar PL, Charlu AP, Subashini B, Vediappan RS, Thomas R. Skull Base Osteomyelitis- Microbiological Profile and Management Implications. Indian J Otolaryngol Head Neck Surg. 2025 Jun;77(6):2234-2238. doi: 10.1007/s12070-025-05442-3. Epub 2025 Apr 28. PMID: 40420877; PMCID: PMC12103396.

Johnson HE, Sunny SS, Hephzibah J, Thomas R, Sundaresan R. 68 Ga-Citrate PET/CT Imaging in the Diagnosis of Skull Base Osteomyelitis and Its Usefulness in the Assessment of Treatment Response. Clin Nucl Med. 2024 Feb 1;49(2):e54-e57. doi: 10.1097/RLU.0000000000004904. Epub 2023 Dec 22. PMID: 38141005.

Thomas, Regi. (2018). Pterygopalatine fossa infiltration- a randomised single blinded study comparing adrenaline and saline in achieving hemostasis during endoscopic sinus surgery. - Orissa Journal of Otolaryngology. 10.21176 /ojolhns.2018.12.2.11.

Vediappan RS, Sara KB, Philip A, Thomas R, Rebekah G, Prabhu K, Michael RC, Singh A, Bapani S, Isaiah R, R C, Kurian R, Thomas M, Irodi A, Job A. Expanded Endoscopic Endonasal Approach in the Management of Anterior Skull Base Malignancies: Experience from a Quaternary Care Center in India. Indian J Surg Oncol. 2025 Dec;16(6):1721-1729. doi: 10.1007/s13193-025-02289-6. Epub 2025 Mar 31. PMID: 41415785; PMCID: PMC12708485.

Joseph J, Govind A, Vediappan RS, Thomas R, Jonathan GE, Raju K. Anterior Skull Base Reconstruction Using a Vascularized Pericranial Flap: A Promising Alternative in Sinonasal Malignancies. J Neurol Surg B Skull Base. 2024 Oct 28;86(6):720-725. doi: 10.1055/s-0044-1792079. PMID: 41140433; PMCID: PMC12552046.

Karthat AG, Regi S, Thomas H, Sara KB, Beula Subashini P, Sundaresan R, Thomas R. Diffusion-Weighted Imaging Does Not Differentiate Between Bacterial and Fungal Skull Base Osteomyelitis. Clin Otolaryngol. 2025 Mar;50(2):300-306. doi: 10.1111/coa.14256. Epub 2024 Nov 12. PMID: 39533393.

Mathew SS, Sundaresan R, Peter J, Irodi A, Thomas R, Sara KB. Orbital Complications of Sino Nasal Tumors. Indian J Otolaryngol Head Neck Surg. 2024 Dec;76(6):5623-5630. doi: 10.1007/s12070-024-05047-2. Epub 2024 Sep 11. PMID: 39559019; PMCID: PMC11569337.

Simultaneous Endoscopic Endonasal and Transcranial Excision of Giant Pituitary Adenomas. Prabhu, Krishna , Chacko, Ari , Jonathan, Edmond , D'Souza, Wilson , Sundaresan, Rajan , HS, Asha , Thomas, Regi. (2023). DOI:84. 10.1055/s-0043-1762035