Functional Endoscopic Sinus Surgery is used to treat selected forms of chronic rhinosinusitis when symptoms and objective findings indicate that surgery may be appropriate.
FESS is performed through the nasal passages using an endoscope. Its purpose is not simply to “clean the sinuses,” but to restore access to diseased sinus pathways, improve drainage and ventilation, and allow medical therapy to reach the affected areas more effectively.
For international patients, the procedure should be planned as part of a complete clinical pathway that includes diagnosis, preoperative assessment, surgery, early postoperative care, and follow-up after returning home.
When FESS May Be Recommended
The decision to perform FESS should be based on the underlying sinus disease rather than symptoms alone.
Assessment should consider:
- Sinus CT findings
- Nasal endoscopy
- Duration and severity of symptoms
- Recurrent infections
- Facial pressure or discomfort
- Reduced sense of smell
- Allergy and asthma history
- Previous medication
- Previous sinus surgery where relevant
The specialist should also assess whether appropriate medical treatment has already been tried and whether surgery is likely to address the main cause of the patient’s symptoms.
Assessment Before Surgery
Accurate preoperative assessment is important because symptoms such as nasal blockage, facial pressure, discharge, and reduced smell may have more than one cause.
For international patients, relevant records should ideally be reviewed before travel. These may include specialist reports, sinus CT images, nasal endoscopy findings, medication history, allergy information, previous operative reports, and pathology or culture results where available.
When important information is missing, the preliminary treatment plan may change after direct examination or updated testing in Türkiye.
How FESS Is Performed
FESS is performed using a rigid nasal endoscope and fine surgical instruments introduced through the nostrils.
The surgeon identifies the affected sinus pathways and removes or opens tissue that is obstructing normal sinus drainage while preserving healthy structures where possible.
The extent of surgery depends on which sinuses are affected, the patient’s anatomy, the severity of disease, and whether previous surgery has altered normal landmarks.
The procedure may therefore range from limited treatment of selected sinus openings to a broader endoscopic sinus operation.
What FESS Is Designed to Achieve
The main objectives of FESS are to:
- Open diseased sinus pathways
- Improve drainage
- Reduce recurrent infectious or inflammatory burden
- Improve ventilation of affected sinuses
- Allow topical medication to reach the sinus cavities more effectively
The expected benefit should be explained in relation to the patient’s individual symptoms and diagnosis. Surgery should not be presented as a guarantee of permanent symptom resolution.
Medical Treatment May Still Be Needed
FESS does not always replace medical treatment.
Patients with chronic inflammatory sinus disease may still require saline irrigation, topical nasal medication, allergy treatment, asthma management, or other long-term medical therapy after surgery.
The operation may improve access for these treatments rather than eliminate the need for them completely.
Risks and Limitations
Before surgery, patients should understand the expected benefit, alternatives, limitations, and potential complications.
Possible risks may include:
- Bleeding
- Infection
- Scarring
- Persistent or recurrent symptoms
- Change in sense of smell
- Recurrent sinus disease
- Orbital injury
- Cerebrospinal fluid leak
- Anaesthesia-related complications
- Need for continued medical treatment
These risks are not expected in every patient, but they should be discussed as part of informed consent before surgery.
Recovery After FESS
Recovery continues after the operation itself.
Postoperative care may include:
- Saline nasal irrigation
- Topical medication
- Nasal cleaning or debridement
- Follow-up nasal endoscopy
- Monitoring for bleeding, infection, or persistent inflammation
- Adjustment of long-term sinus medication
The exact recovery pathway depends on the extent of surgery and the patient’s underlying disease.
Postoperative Endoscopy and Debridement
Postoperative endoscopic review can be an important part of recovery.
During follow-up, the ENT specialist may assess healing, remove crusting or retained material, review sinus openings, and adjust topical treatment.
For international patients, the need for early postoperative cleaning or endoscopy should be considered when determining how long to remain in Türkiye after surgery.
Travel Planning After FESS
Travel timing should be based on the patient’s actual recovery rather than a fixed generic schedule.
A safe plan should allow time for:
- Preoperative examination
- Final review of imaging
- Surgery
- Early postoperative assessment
- Medication instructions
- Nasal care guidance
- Clear follow-up arrangements
The patient should know before travelling home which reviews need to take place with the treating team and which can continue with a local ENT specialist.
Follow-Up After Returning Home
The patient should return home with clear medical documentation.
This should include the final diagnosis, procedure performed, important operative findings, medication instructions, postoperative restrictions, warning symptoms, pathology information where relevant, and recommended follow-up schedule.
Local ENT specialists should be able to understand exactly what was performed and what needs to be monitored during the healing period.
Remote communication can support continuity of care, but urgent symptoms should be assessed locally.
When Urgent Assessment Is Needed
After sinus surgery, symptoms such as heavy bleeding, severe or rapidly worsening pain, high fever, breathing difficulty, vision changes, neurological symptoms, or rapid deterioration require prompt local medical assessment rather than relying only on remote communication.
How Healing Journey Supports FESS
Healing Journey helps international patients organize the records needed for specialist review, coordinate assessment with the appropriate ENT team, clarify what can be decided before travel, and organize the treatment and follow-up pathway.
We also support the preparation of medical documentation so that care can continue appropriately after the patient returns home.
The aim is to make the pathway clear from the beginning: why surgery is being considered, what it is expected to achieve, what recovery involves, and what follow-up will be required afterward.
Selected References
- American Academy of Otolaryngology–Head and Neck Surgery. Clinical Practice Guidelines and Quality Resources for Otolaryngology–Head and Neck Surgery.
- European Position Paper on Rhinosinusitis and Nasal Polyps (EPOS). Evidence-Based Recommendations for the Diagnosis and Management of Chronic Rhinosinusitis and Nasal Polyps.
- European Rhinologic Society. Clinical Resources on Chronic Rhinosinusitis and Endoscopic Sinus Surgery.
- ENT Health. Patient Education Resources on Chronic Sinus Disease and Endoscopic Sinus Surgery.
- American Rhinologic Society. Clinical and Patient Resources on Chronic Sinus Disease and Endoscopic Sinus Surgery.
