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Associate Professor Thomas Loh

Deputy Director (Clinical)

National University Cancer Institute, Singapore (NCIS)

Leader and Senior Consultant

Division of Surgical Oncology (Head and Neck Surgery), NCIS

Director, Leadership Strategy, National University Health System (NUHS)

Head of Department
Department of Otolaryngology - Head and Neck Surgery, National University Hospital (NUH)

Associate Professor
Department of Otolaryngology, Yong Loo Lin School of Medicine, National University of Singapore (NUS)


A/Prof Thomas Loh graduated from the Faculty of Medicine, National University of Singapore. He underwent residency in Otolaryngology at the National University Hospital and subsequently trained in Head and Neck Cancer Surgery at the Princess Margaret Hospital and Toronto General Hospital in Canada. He is currently a Senior Consultant in the Division of Surgical Oncology (Head and Neck Surgery), NCIS and Head of Department of the Department of Otolaryngology - Head and Neck Surgery, NUH, with his practice in Head and Neck Oncology. A/Prof Loh’s practice is concentrated only on patients with head and neck cancers.


His practice includes patients with cancers of the oral cavity, pharynx, larynx, thyroid and other sites. The majority of his cancer patients have thyroid cancers, nasopharyngeal carcinoma (NPC) and oral cavity cancers. He leads the Head and Neck Tumour Board, where radiation and medical oncologists together with surgical oncologists decide on the stage and the treatment for the cancer patients. A/Prof Loh performs surgery of the thyroid gland, parotid/salivary glands and other major complicated surgery to treat cancers of the oral cavity, pharynx and larynx. Where it is appropriate, he also treats cancer of the larynx using laser surgery. He also performs highly complicated tumours of the anterior skull base, or tumours at the junction just below the brain.


A/Prof Loh is the Head of Department and leads a large group of specialists as well as research staff in the Department. He also mentors a constant stream of elective students from overseas ranging from Australia to England, Netherlands and Germany just to name a few. He is a member of the Residents Advisory Committee that currently oversees the Otolaryngology speciality in Singapore. He was awarded the Yong Yoo Lin School of Medicine Faculty Teaching Excellence Award and the NUS University Teaching Excellence Award in 2006 in recognition of his contribution to medical undergraduate teaching in NUS. In 2012 and 2013, he was also awarded the NUH post graduate teaching awards. A/Prof Loh is also active in research. His main research is in the area of early diagnosis on NPC.


He is the current Principle Investigator of 3 grants and a key collaborator in at least another 10 other concurrent studies. His research is focused on a screening programme for first-degree relatives of NPC patients.



Education and Fellowships




Specialty Interests

  • Head & Neck Cancers
  • Thyroid Surgery



Awards and Honours

  • Faculty Teaching Excellence Award 2005-2006, Yong Loo Lin School of Medicine, NUS
  • Academic Teaching Excellence Award 2005-2006, NUS
  • Faculty Excellent Teaching Award on May 2007
  • University Education Award 2007
  • NUH Best Postgraduate Teaching Award 2012
  • NUH Best Postgraduate Teaching Award 2013
  • NUH Teaching Excellence Award 2016


Selected Publications

  • The Role of Epstein-Barr Virus DNA Load and Serology as Screening Tools for Nasopharyngeal Carcinoma. Tay JK, Chan SH, Lim CM, Siow CH, Goh HL, Loh KS. Otolaryngol Head Neck Surg. 2016 Aug;155(2):274-80. doi: 10.1177/0194599816641038. Epub 2016 May 3. PMID:27143706.
  • Long-term outcomes of nasopharyngectomy using partial maxillectomy approach. Ng LS, Lim CM, Loh KS. Laryngoscope. 2016 May;126(5):1103-7. doi: 10.1002/lary.25777. Epub 2015 Nov 6. PMID:26542399. 
  • Yu F, Loh KS, Hsieh WS, Petersson F, Yang H, Li Y, Li C, Low SW, Liu J, Yan Y, Wang DY, Malignant cells derived from 3T3 fibroblast feeder layer in cell culture for nasopharyngeal carcinoma. Exp Cell Res. 2014 Mar.
  • • Madana J, Lim CM, Loh KS, Narrow band imaging of nasopharynx to identify specific features for the possible detection of early nasopharyngeal carcinoma. Head Neck. 2014 Apr 7. doi: 10.1002/hed.23705. PMID: 24710736.
  • • Loh KS, "Familial nasopharyngeal carcinoma in a cohort of 200 patients". Archives of Otolaryngology - Head & Neck Surgery, 132 (2006). (United States). Publication no. 0347592. 



Updated as of 27 November 2017