Functional endoscopic sinus surgery enlarges pathways to the sinuses. It is done using a special tube that can be passed through the nose.
The sinuses are hollow areas in the skull that are arranged in pairs. Mucus and other fluids drain from the sinuses through small pathways to the throat. Blockage of these pathways can cause fluids to build up in the sinuses. This can cause pain and infection.
This surgery is done to open the pathways for drainage. It may be done for people who have recurring sinus infections that have not responded to other treatments.
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Problems are rare, but all procedures have some risk. The doctor will go over some problems that could happen, such as:
Smoking may raise the risk of problems.
The surgical team may meet with you to talk about:
The doctor may give:
A thin tube called an endoscope will be inserted into the nose. The scope allows the doctor to view the inside of the nose. Other tools are passed through the nose to remove abnormal tissues and open the sinus pathways. The nose may be packed with bandages and splints.
2 to 4 hours
You may have discomfort and feel tired in the first week. Medicine and home care can help.
You will have mild swelling and discomfort. Ask your doctor about pain medication.
Most people can go home the same day. If you have problems, you may need to stay longer.
Right after the procedure, the staff may give you pain medicine.
It will take 2 to 3 weeks for breathing to return to normal. Some physical activities may be limited. You may need to delay your return to work.
Call your doctor if any of these occurs:
If you think you have an emergency, call for medical help right away.
American Academy of Otolaryngology—Head and Neck Surgery
Family Doctor—American Academy of Family Physicians
Canadian Society of Otolaryngology—Head and Neck Surgery
The College of Family Physicians of Canada
Chronic rhinosinusitis. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/chronic-rhinosinusitis. Accessed August 4, 2021.
Functional endoscopic sinus surgery. UNC School of Medicine website. Available at: https://www.med.unc.edu/ent/patient-care/clinical-services/sinus-and-allergy-1__trashed/functional-endoscopic-sinus-surgery. Accessed August 4, 2021.
Functional endoscopic sinus surgery (FESS). The Children’s Hospital of Philadelphia website. Available at: https://www.chop.edu/treatments/functional-endoscopic-sinus-surgery-fess. Accessed August 4, 2021.
Last reviewed July 2021 by EBSCO Medical Review Board James Cornell, MD Last Updated: 8/4/2021