Prof. (Dr). Kalayarasan Raja is a Senior Consultant Gastrointestinal, Hepato-Pancreato-Biliary (HPB) and Robotic/laparoscopic Oncosurgeon with extensive experience in complex GI, HPB and minimally invasive cancer surgery. He has special expertise in robotic and laparoscopic surgery for liver, pancreas, bile duct, gallbladder, stomach, esophageal and colorectal cancers.
He is known for performing advanced robotic HPB procedures, including robotic pancreaticoduodenectomy, robotic liver resections, robotic surgery for hilar cholangiocarcinoma, robotic distal pancreatectomy including distal pancreatectomy with celiac axis resection and minimally invasive surgery for gallbladder cancer. He has performed a number of World's first robotic surgical procedures. His clinical focus is to provide safe, precise and evidence-based treatment using advanced surgical technology.
He has more than 100 PubMed-indexed publications, contributed more than 20 book chapters and has received several national and international awards for innovation in robotic HPB surgery, and is actively involved in surgical training, academic research and international HPB outreach programs
July 2020 – July 2024 - Additional Professor Department of Surgical Gastroenterology Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India
July 2017-June 2020 – Associate Professor Department of Surgical Gastroenterology Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India
November 2013 to June 2017 – Assistant Professor Department of Surgical Gastroenterology Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India
Special interest
Robotic Surgery GI Surgery
Minimially Invasive Hepatopancreatobiliary (HPB) surgery
Laparoscopic GI Onco Surgery
Memberships
Tamil Nadu Medical Council Registration number: 73896
Member of International Society for Diseases of the Esophagus (ISDE) [Membership committee member]
Member of Association of Surgeons of India (ASI)
Member of Indian Association of Surgical gastroenterology (IASG)
Member of Indian Association of Gastrointestinal Endosurgeons (IAGES)
Member of Obesity Surgery Society of India (OSSI)
Member of Indian Society for Diseases of the Esophagus and Stomach (ISES)
Member of Association of Minimal Access Surgeons of India (AMASI)
Member of International Hepato-Pancreato-Biliary association (IHPBA), Indian chapter
Member of International Hepato-Pancreato-Biliary association (IHPBA)
Member of Asia-Pacific Hepato-Pancreato-Biliary Association (A-PHPBA)
Member of the Society for Surgery of the Alimentary tract (SSAT)
Awards & Achievements
Distinctions First Class with Distinction in First, Second, and Final MBBS Examinations – JIPMER, Puducherry (1999–2002)
South Arcot CSMS Gold Medal – Highest marks in Ophthalmology, Final MBBS Examination-I, JIPMER (2001)
Balakrishna Rao Gold Medal, S.C. Mitra & Geeta Mitra Endowment Prize, and S.B. Sen Memorial Gold Medal – MS General Surgery, JIPMER (2007)
Department of Science, Technology & Environment – Estrogen and Progesterone Receptors in Esophageal Carcinoma (2005)
Indian Council of Medical Research (ICMR) – Predictive markers in Esophageal Cancer (2019)
Best Oral Paper – Indian Association of Surgical Gastroenterology (IASG), Lucknow (2006)
Multiple Best Paper, Poster, and Video Awards – IASG, IHPBA, KSELS, ELSA, ESSO, and FORS Congresses (2010–2024)
Young Investigator Award – Asia Pacific Digestive Week, Hong Kong (2017)
KS International Innovation Best Video Award – Korea (2025)
Awarded by IHPBA India, Japanese HBP Society, Japan Surgical Society, IASGO, ESSO, ELSA, and ICMR for participation in international congresses across Paris, Seoul, Wakayama, Vancouver, Nagoya, Sao Paulo, Krakow, Vienna, and Incheon (2012–2024)
Organizing Secretary – IASGCON 2017, Robotic GI Surgery Course 2019, IHPBA India 2024
Program Coordinator – IHPBA Outreach Program, Cambodia (2023)
Scientific Committee Member – APHPBA (2024)
Member – IHPBA Global Collaboration Committee (2024)
Research & Publications
01
Kalayarasan R, Ananthakrishnan N, Kate V, Basu D. Estrogen and progesterone receptors in esophageal carcinoma. Dis Esophagus. 2008.
02
Kalayarasan R, Javed A, Sakhuja P, Agarwal AK. Squamous variant of gallbladder cancer. Am J Surg. 2013.
03
Kalayarasan R, Javed A, Puri AS, et al. Preoperative assessment of duodenal involvement in gallbladder cancer. HPB (Oxford). 2013.
04
Kalayarasan R, Ananthakrishnan N, Kate V. Corrosive ingestion. IJCCM. 2019.
05
Kalayarasan R, Gautham MS, Gnanasekaran S, Pottakkat B. Robotic pancreaticoduodenectomy vascular control technique. J Minim Access Surg. 2021.
06
Kalayarasan R, Narayanan S, Sahoo J, Mohan P. Surgery for chronic pancreatitis & pancreatic cancer risk. World J Gastroenterol. 2021.
07
Kalayarasan R, Narayanan S, James M. Robotic fluorescence‑guided liver resection. J Minim Access Surg. 2022.
08
Kalayarasan R, Shukla A. Minimally invasive surgery trends in chronic pancreatitis. World J Gastroenterol. 2023.
09
Kalayarasan R, Durgesh S. Minimally invasive surgery for corrosive strictures. World J Gastrointest Surg. 2023.
10
Kalayarasan R, Himaja M, Ramesh A, Kokila K. Radiological predictors of pancreatic texture. World J Radiol. 2023.
11
Kalayarasan R, Chandrasekar M, Sai Krishna P, Shanmugam D. ICG fluorescence in GI surgery. World J Gastrointest Surg. 2023.
12
Kalayarasan R, Sai Krishna P. Minimally invasive surgery for biliary stricture. World J Gastrointest Surg. 2023.
13
Kalayarasan R, Sai Krishna P. Robotic esophagectomy with lymphadenectomy. Ann Gastroenterol Surg. 2024.
Robotic and laparoscopic distal pancreatectomy
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