Sinus CT Scan in Singapore

Living with persistent sinus problems despite previous sinus surgery can be challenging. Patients who continue experiencing chronic sinusitis symptoms, nasal obstruction, or recurring infections after their initial procedure may wonder about further treatment options.

Revision sinus surgery is a treatment option for those whose symptoms have returned or never fully resolved after their first operation. This procedure requires careful evaluation and surgical planning to address the challenges presented by altered anatomy and scar tissue from previous surgery.

At our clinic in Singapore, our ENT Specialist understands the complexities of revision cases and works with each patient to develop an individualised treatment plan. Individual results and treatment outcomes may vary.

Dr Gan Eng Cern

Ear, nose and throat specialist

MBBS

MRCS (Edin)

mmed (orl)

FAMS

Image Whisk_20facbbd13d3607a8d449abe56fb67ebdr

Overview Suitability Treatment Process Recovery Benefits Risks Cost FAQ

What is Revision Sinus Surgery?

Revision sinus surgery, also known as secondary endoscopic sinus surgery, is a procedure performed when initial sinus surgery has not provided adequate symptom relief or when sinus problems have recurred. This surgery addresses persistent or recurrent chronic rhinosinusitis, nasal polyps, or structural issues that remain after the first operation. The procedure involves reopening and modifying previously operated sinus passages, removing scar tissue, addressing missed disease areas, and correcting any anatomical problems that may have developed or been overlooked initially.

Unlike primary sinus surgery, revision procedures require navigating through altered anatomy where normal landmarks may be absent or distorted. The ENT specialist must carefully identify and preserve important structures whilst removing diseased tissue, scar tissue, and any obstructions blocking proper sinus drainage. Contemporary endoscopic techniques allow surgeons to visualise the surgical field clearly through a thin telescope inserted through the nostrils, eliminating the need for external incisions. The procedure may involve opening blocked sinus ostia (drainage pathways), removing recurrent polyps, straightening a deviated septum if not previously addressed, or correcting middle turbinate lateralisation that can obstruct sinus drainage.

Who is a Suitable Candidate?

Ideal Candidates

Patients experiencing persistent or recurrent chronic sinusitis symptoms despite previous sinus surgery
Individuals with recurring nasal polyps following initial polypectomy
Those with persistent facial pain, pressure, or headaches related to sinus disease
Patients experiencing chronic post-nasal drip or thick nasal discharge after prior surgery
Individuals with persistent nasal obstruction or difficulty breathing through the nose
Those with recurring sinus infections requiring frequent antibiotics
Patients whose CT scans show persistent sinus disease or anatomical problems
Individuals who have developed complications from previous surgery requiring correction

Contraindications

Severe bleeding disorders or inability to stop blood-thinning medications
Active, untreated sinus or systemic infections
Certain autoimmune conditions affecting healing
Poor general health status, making surgery risky
Inability to comply with post-operative care requirements

A thorough evaluation by an ENT specialist is essential to determine whether revision sinus surgery is appropriate. This assessment includes reviewing your previous surgical records, analysing current CT scans, performing nasal endoscopy, and understanding your specific symptoms and treatment goals. Some patients may benefit from medical management alternatives before considering revision surgery.

Treatment Techniques & Approaches

Functional Endoscopic Sinus Surgery (FESS) Revision

Revision surgery uses functional endoscopic techniques similar to the initial procedure but with modifications to address the altered anatomy. During revision FESS, the ENT specialist uses specialised angled endoscopes and instruments to navigate through scar tissue and identify key anatomical landmarks. The procedure aims to restore proper sinus drainage by widening narrowed or scarred sinus openings, removing obstructive scar tissue, and addressing diseased mucosa. Attention is paid to the frontal recess area, which commonly scars down after initial surgery, and the sphenoid sinus, which may have been incompletely addressed initially.

Image-Guided Navigation Surgery

Revision cases may benefit from computer-assisted navigation technology, which provides real-time, three-dimensional mapping of the surgical field. This technology works like a GPS for sinus surgery, helping the ENT specialist identify critical structures and navigate safely through distorted anatomy. The navigation system correlates the patient’s CT scan with the actual surgical field, allowing precise localisation even when normal landmarks are absent. This approach can be particularly valuable when dealing with extensive scarring, skull base proximity, or when previous surgery has significantly altered the anatomy.

Extended Procedures and Modifications

Revision surgery often requires additional procedures to achieve outcomes. These may include septoplasty if septal deviation wasn’t previously corrected, inferior turbinate reduction to improve nasal airflow, or middle turbinate resection if lateralisation is causing obstruction. Some cases require more extensive approaches, such as the modified Lothrop procedure (Draf III) for frontal sinus disease or maxillary mega-antrostomy for recurrent maxillary sinusitis.

Technology & Equipment Used

Modern revision sinus surgery employs high-definition endoscopes with various angles (0, 30, 45, and 70 degrees) for comprehensive visualisation. Powered instrumentation, including microdebriders, helps remove polyps and scar tissue while preserving healthy mucosa. Haemostatic agents and materials help control bleeding, which can be more challenging in revision cases due to the increased vascularity of scar tissue.

Wondering which approach might be suitable for you?

Our ENT Specialist can evaluate your specific needs and discuss the available techniques.

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The Treatment Process

Pre-Treatment Preparation

Before revision sinus surgery, comprehensive preparation aims to support treatment outcomes. Your sENT specialist can review previous operative reports and compare old and new CT scans to understand what was previously done and plan the revision approach. Medical optimisation may include treating active infections, managing allergies, or adjusting medications that affect bleeding. Patients typically need to stop blood-thinning medications, aspirin, and certain supplements before surgery as advised by their surgeon. Pre-operative nasal rinses may be prescribed to reduce bacterial load and inflammation. You’ll receive specific instructions about fasting before surgery and arranging transportation home afterwards.

During the Procedure

Revision sinus surgery is typically performed under general anaesthesia, though some minor revisions may use local anaesthesia with sedation. The procedure begins with careful decongestion of the nasal cavity and injection of local anaesthetic with adrenaline to minimise bleeding. The ENT specialist then systematically examines each sinus cavity using the endoscope, identifying areas of scarring, residual disease, or anatomical problems.

Scar tissue is carefully removed using specialised instruments, taking care to preserve any functioning mucosa. Blocked sinus openings are widened, and any polyps or diseased tissue are removed. The ENT specialist may place temporary spacers or stents in certain areas to prevent re-scarring during healing. Navigation technology, when used, helps confirm the location of critical structures throughout the procedure. The surgery duration varies depending on the extent of revision needed and the number of sinuses involved.

Immediate Post-Treatment

After surgery, you’ll recover in the post-anaesthesia care unit where nurses monitor your vital signs and comfort level. Some bloody nasal discharge is normal and expected. Nasal packing, if used, is typically absorbable and doesn’t need to be removed. Pain is usually mild to moderate and managed with prescribed medications. Patients may go home the same day once fully awake and stable. You’ll receive detailed instructions about nasal care, medications, and warning signs to watch for. Ice packs applied to the face can help reduce swelling and provide comfort.

Recovery & Aftercare

First 24-48 Hours

The initial recovery period requires rest and careful attention to post-operative instructions. Keep your head elevated, even while sleeping, to help minimise swelling and bleeding. Light bleeding or blood-tinged discharge is normal, but active bleeding needs to be reported to your surgeon. Begin gentle saline rinses as directed, usually starting the day after surgery. Take pain medication as prescribed, and complete antibiotics fully. Avoid blowing your nose, bending over, or straining, as these can increase your risk of bleeding. Stay well-hydrated and eat soft, cool foods initially.

First Week

During the first week, gradual improvement in breathing and comfort may occur, though congestion from swelling and crusting is expected. Continue regular saline irrigations to keep the nasal passages moist and clear. Your first post-operative visit usually occurs within the first week after surgery to clean and remove debris. Light activities can resume, but avoid strenuous exercise, heavy lifting, or activities that significantly raise blood pressure. Some patients experience temporary changes in smell or taste, which may improve as healing progresses. Sleeping with the head elevated continues to help with drainage and comfort.

Long-term Recovery

Complete healing after revision sinus surgery takes several months, and patients may notice improvement over time. Regular follow-up appointments are important for endoscopic cleaning and monitoring of healing. These visits help prevent scarring and support recovery outcomes. Return to normal activities, including exercise, may occur as advised by your surgeon.

Long-term nasal irrigation may be recommended to maintain sinus health. Some patients benefit from ongoing medical management, including nasal steroid sprays or allergy treatments. Full mucosal healing and final results may take several months to achieve. Outcomes of revision surgery vary, and individual results depend on factors such as anatomy and healing response.

This treatment is administered as part of a comprehensive plan supervised by an ENT specialist.

Our ENT Specialist provides post-procedure support to help with recovery.

Schedule your consultation to learn more about what to expect.

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Benefits of Revision Sinus Surgery

Revision sinus surgery may help improve the quality of life for patients with persistent symptoms. The procedure aims to restore nasal breathing, which could support better sleep quality and energy levels. Reduction in facial pain and pressure may provide relief from the discomfort of chronic sinusitis. Sinus infections could become less frequent and severe, potentially reducing the need for antibiotics.

Improved sinus drainage may decrease post-nasal drip, which can help reduce throat irritation and chronic cough. The procedure might help improve the sense of smell and taste, enhancing the enjoyment of food. The reduction in chronic inflammation could also support the management of associated conditions such as asthma or chronic fatigue. For patients with nasal polyps, revision surgery may help prevent or delay polyp regrowth when combined with appropriate medical management.

The psychological benefits of achieving symptom relief after previous surgical disappointment can be significant, potentially improving overall well-being and daily functioning.

Risks & Potential Complications

Common Side Effects

Temporary nasal congestion and drainage are expected during healing and typically resolve within several weeks. Mild to moderate facial pain or pressure may occur initially but improves with prescribed pain medication. Temporary reduction in sense of smell may occur due to swelling and usually returns as healing progresses. Nasal crusting requires regular cleaning and irrigation during the first few weeks. Some patients experience mild nosebleeds during the first week, particularly with nasal irrigation. Fatigue is normal during initial recovery as the body heals.

Rare Complications

While uncommon, serious complications can occur. Eye-related issues such as muscle injury or vision changes require immediate attention if they happen. A cerebrospinal fluid leak, though very rare, may occur if the skull base is affected during surgery. Significant bleeding requiring intervention is also possible. Severe scarring that leads to complete nasal obstruction can occur but is unusual with appropriate post-operative care. Permanent loss of smell is rare but remains a potential risk. Revision surgery generally carries increased risk due to altered anatomy and existing scarring.

An ENT specialist in Singapore can help reduce these risks through meticulous surgical technique, the use of image guidance when appropriate, and structured post-operative care. Selecting a surgeon experienced in complex and revision procedures supports treatment safety and outcomes.

Cost Considerations

The cost of revision sinus surgery in Singapore varies based on several factors, including the complexity of the revision required, the number of sinuses involved, and whether additional procedures like septoplasty are needed. The use of image-guided navigation technology, when necessary for safety and precision, may affect overall cost. The surgical facility, anaesthesia fees, and post-operative care requirements all contribute to the total expense.

Revision surgery often requires more operating time and specialised equipment compared to primary surgery, which is reflected in the cost structure. Post-operative care may be more intensive, requiring more frequent follow-up visits for endoscopic cleaning and monitoring. Some patients may benefit from specialised medications or treatments to support healing.

During your consultation, you’ll receive a detailed breakdown of expected costs based on your specific surgical plan. While cost is an important consideration, your surgeon’s experience is a factor in these cases.

Frequently Asked Questions (FAQ)

Why did my initial sinus surgery fail, and will revision surgery be more successful?

Initial sinus surgery may provide incomplete relief for various reasons, including inadequate initial surgery, aggressive scarring, underlying inflammatory conditions, or development of new pathology. Revision surgery aims to address the cause of failure. With careful evaluation, appropriate surgical planning, and management of underlying conditions, revision surgery may help improve symptoms.

How long should I wait after my first surgery before considering revision?

Surgeons typically recommend waiting at least several months after initial surgery before considering revision, as complete healing and final results take time. However, if you develop complications or have severe, persistent symptoms, earlier evaluation may be appropriate. During this waiting period, medical management may need to be optimised to determine if surgery is truly necessary. Your ENT specialist can evaluate your specific situation to determine the optimal timing for revision surgery.

Is revision sinus surgery more painful or difficult to recover from than the initial surgery?

Recovery from revision surgery is generally similar to primary surgery, though some aspects may differ. While the surgery itself may be more technically challenging for the surgeon, patients typically don’t experience significantly more pain. Recovery time is typically similar to that of the initial surgery for return to normal activities. Some patients report an easier recovery because they know what to expect. The key difference is often the need for more frequent post-operative visits to prevent scarring and optimise healing.

Do I need multiple revision surgeries, or is one revision usually enough?

While revision surgery may provide lasting relief, some patients may require additional procedures, particularly those with aggressive inflammatory conditions or polyp disease. Factors affecting the need for further surgery include the underlying disease severity, compliance with medical management, and individual healing characteristics. Regular follow-up and maintenance medical therapy helps minimise the need for additional surgeries. Your ENT specialist can discuss your specific risk factors and long-term prognosis during consultation.

What can I do to maximise the success of my revision surgery?

Several factors may contribute to favourable outcomes. Before surgery, optimise any allergies or inflammatory conditions, stop smoking if applicable, and follow all pre-operative instructions carefully. After surgery, strict adherence to nasal irrigation regimens and medications is important. Attend all follow-up appointments for endoscopic cleaning to prevent scarring. Long-term management of underlying conditions, such as allergies or aspirin sensitivity, may help maintain surgical results. Maintaining good general health and avoiding irritants also supports healing.

Will I need to use nasal medications permanently after revision surgery?

Many patients may benefit from long-term medical management after revision surgery to maintain results and prevent recurrence. This might include nasal steroid sprays, saline irrigations, or antihistamines for allergy control. The specific regimen depends on your underlying condition and surgical outcomes. Some patients with inflammatory conditions may need ongoing treatment, while others may eventually discontinue medications.

For Singaporeans & Singapore Permanent Residents

Medisave & Insurance Shield Plan approved

Your ENT procedure may be eligible for Medisave claims, with the claimable amount varying based on the procedure’s complexity. For additional options, including the use of your insurance or Integrated Shield Plan, reach out to our friendly clinic staff today for assistance.

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Conclusion

Revision sinus surgery is an option for patients who continue to experience chronic sinus problems despite previous surgical intervention. While more complex than initial surgery, modern endoscopic techniques and navigation technology may help experienced surgeons achieve outcomes in challenging cases. The approach involves thorough pre-operative evaluation, meticulous surgical technique, and comprehensive post-operative care. Understanding that revision surgery addresses the unique challenges of altered anatomy and persistent disease helps set realistic expectations for recovery and outcomes. With proper patient selection and surgical expertise, revision sinus surgery may help relieve symptoms after the initial procedure.

Ready to Take the Next Step?

If you’re considering revision sinus surgery, our ENT Specialist can help you understand if it’s an appropriate option for your needs. With experience in revision sinus surgery, we provide personalised care throughout your journey.

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Dr Gan Eng Cern

Ear, nose and throat specialist

MBBS

MRCS (Edin)

mmed (orl)

FAMS

With over 15 years of experience, Dr Gan specialises in the comprehensive management of a broad range of conditions related to the ear, nose and throat (ENT), and head and neck.

Dr. Gan has contributed to the academic field as a Senior Clinical Lecturer at the Yong Loo Lin School of Medicine, National University of Singapore. He underwent his subspecialty training in Rhinology (Nose & Sinus conditions) and Endoscopic Skull Base Surgery at the renowned St Paul’s Sinus Center, part of the University of British Columbia in Vancouver, Canada. He is recognised for his extensive research work, with numerous contributions to reputable international ENT journals. Dr Gan is also highly sought after as a speaker and has shared his surgical knowledge as a surgical dissection teacher at various prominent ENT conferences and courses.

2020 – Reader’s Choice Gold Award for Best ENT Specialist (Expat Living Singapore)
2016 – Best Educator Award (Eastern Health Alliance)
2016 – “Wow” Award (Patient Compliment)

2014 – Eastern Health Alliance Caring Award – Silver
2014 – 19th Yahya Cohen Memorial Lectureship (awarded by the College of Surgeons, Academy of Medicine Singapore for best scientific surgical paper)
2012 – Human Manpower Development Award (Ministry of Health, Singapore)
2007 – Singhealth Best Doctor Award

Qualifications

MBBS – Bachelor of Science, Bachelor of Medicine, Bachelor of Surgery (University of New South Wales, Sydney, Australia)
MRCS (Edin) – Member of the Royal College of Surgeons Edinburgh, United Kingdom
MMed (ORL) – Master of Medicine in ENT (National University of Singapore)
FAMS – Fellow of the Academy of Medicine Singapore

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Our Location

A Specialist Clinic for Sinus, Snoring & ENT

38 Irrawaddy Road #08-45
Mount Elizabeth Novena Hospital
Singapore 329563

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+65‎ 6253‎ 7296

+65 9058 2480

Mon – Fri: 9:00 am – 5:00 pm
Sat: 8:30 am – 12:00 pm