Care at NUH

Rhinology, Allergy and Skull Base

2025/07/21

Our Rhinology & Skull Base surgeons specialise in nasal, sinus, allergy, and anterior skull base conditions. They are supported by trained allergy nurses who provide patients with personalised care and tests for allergy, sinusitis, and smell disorders. Patients have access to an array of minimally invasive, innovative approaches to the sinonasal cavity and skull base, as well as the full complement of standard skull base approaches.

The team works with other ENT subspecialties, like Head & Neck, and disciplines such as Neurosurgery and Ophthalmology, to manage complex sinonasal, skull base and orbital conditions.

Conditions
Nose and Sinus Diseases
Skull Base Diseases
  • Cerebrospinal fluid leak (CSF leak)
  • Pituitary tumours
  • Skull base osteoradionecrosis
  • Skull base tumours
Eye-related Diseases
  • Excessive tearing (epiphora)
  • Graves' disease
Common Surgical Procedures
Nasal Surgeries
  • Bilateral inferior turbinoplasty
  • Cryotherapy
  • Functional endoscopic sinus surgery (FESS)
  • Radiofrequency of inferior turbinate
  • Resection of sinonasal tumours
  • Septoplasty
  • Vidian neurectomy
Skull Base Surgeries
  • Repair of cerebrospinal fluid leak (CSF leak)
  • Resection of skull base tumours
  • Vascularised flap cover of skull base osteoradionecrosis

Eye-related Surgeries

  • Endoscopic dacryocystorhinostomy
  • Optic nerve decompression
  • Orbital decompression
Allergy Clinic Services

Allergy-trained nurses will provide the following services:

  • Acoustic rhinometry
  • Allergen Immunotherapy (subcutaneous and sublingual)
  • Allergy counselling
  • Diet counselling
  • Intradermal provocative food test (IPFT)
  • Olfactory (smell) test – Basic or Advanced
  • Radioallergosorbent test (RAST)
  • Serum allergen-specific IgE test
  • Skin prick test (SPT)
Doctors
Dr Mark Thong

A/Prof Mark Thong
Senior Consultant

Dr Xu Xinni

Dr Xu Xinni
Consultant

 

 

 

Dr Margaret Zhang
Associate Consultant

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National University Health System
  • National University Hospital
  • Ng Teng Fong General Hospital
  • Alexandra Hospital
  • Tengah General and Community Hospital
  • Jurong Community Hospital
  • National University Polyclinics
  • Jurong Medical Centre
  • National University Cancer Institute, Singapore
  • National University Heart Centre, Singapore
  • National University Centre for Oral Health, Singapore
  • NUHS Diagnostics
  • NUHS Pharmacy
  • NUHS Regional Health System Office
  • NUS Yong Loo Lin School of Medicine
  • NUS Faculty of Dentistry
  • NUS Saw Swee Hock School of Public Health
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