Care at NUH

Rhinology, Allergy and Skull Base


Our Rhinology & Skull Base surgeons specialise in nasal, sinus, allergy and anterior skull base conditions. The allergy clinic, supported by highly experienced allergy nurses, provides patients with personalised care and testing for allergy, sinusitis and smell disorders. Together with colleagues in Head & Neck, Neurosurgery and Ophthalmology, the team also provides advanced subspecialty expertise in the surgical management of complex sinonasal, skull base and orbital pathologies. 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.

Nasal Conditions
Nose and sinus diseases
  • Allergic rhinitis and chronic rhinitis
  • Deviated nasal septum
  • Inferior turbinate hypertrophy
  • Sinusitis
  • Nose bleeds
  • Nasal polyps
  • Smell disorders
  • Sinonasal tumours (benign/malignant)
Skull base diseases
  • Pituitary tumours
  • Skull base tumours
  • Cerebrospinal fluid leak (CSF leak)
  • Skull base osteoradionecrosis
Eye-related diseases
  • Graves disease
  • Excessive tearing (epiphora)
Common Surgical Procedures
Nasal surgeries
  • Septoplasty
  • Radiofrequency of inferior turbinate
  • Bilateral inferior turbinoplasty
  • Functional endoscopic sinus surgery (FESS)
  • Resection of sinonasal tumours
  • Vidian neurectomy
Skull base surgeries
  • Resection of skull base tumours
  • Repair of cerebrospinal fluid leak (CSF leak)
  • Vascularised flap cover of skull base osteoradionecrosis
Eye-related surgeries
  • Endoscopic dacryocystorhinostomy
  • Orbital decompression
  • Optic nerve decompression
Allergy Clinic Service
  • Skin prick test (SPT)
  • Serum allergen-specific IgE test
  • Intradermal provocative food test (IPFT)
  • Radioallergosorbent test (RAST)
  • Smell test
  • Acoustic rhinometry
  • Allergy couselling
  • Allergen Immunotherapy (subcutaneous and sublingual)
  • Diet Counselling
Dr Mark Thong

Dr Mark Thong
Senior Consultant

Dr Xu Xinni

Dr Xu Xinni

Last updated on
Best viewed with Chrome 79.0, Edge 112.0, Firefox 61.0, Safari 11
National University Health System
  • National University Hospital
  • Ng Teng Fong General Hospital
  • Alexandra 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
  • Yong Loo Lin School of Medicine
  • Faculty of Dentistry
  • Saw Swee Hock School of Public Health
Back to Top