Procedures: Balloon Sinuplasty

Balloon sinuplasty is a minimally invasive procedure that uses a small balloon to widen the natural drainage openings of the sinuses, improving airflow and drainage without cutting or removing tissue. It is one option for certain people with chronic or recurring sinus infections that have not improved with medication, and it can be done either in a doctor's office or an operating room.

What Balloon Sinuplasty Is

Balloon sinuplasty, also called balloon sinus dilation, uses a thin, flexible catheter tipped with a tiny balloon. The balloon is guided into a blocked sinus opening and gently inflated, which widens the opening by pressing outward on the surrounding tissue and creating small microfractures in the thin bone. This reshapes and enlarges the natural drainage pathway so the sinus can ventilate and drain more normally. The tissue lining is pushed aside rather than cut, so the sinus's own lining is preserved. The technology was cleared by the U.S. Food and Drug Administration in 2005.

The key difference from traditional endoscopic sinus surgery is that balloon sinuplasty does not remove tissue, bone, or polyps. Functional endoscopic sinus surgery (FESS) uses cutting instruments and powered shavers to take out inflamed tissue and create wide openings into the sinuses, which is often necessary for widespread inflammation and which also helps medicated rinses reach the sinuses afterward. Balloon sinuplasty is a more limited procedure that simply opens existing drainage channels. Because of this, FESS is generally considered the standard when sinus disease is extensive, while balloon dilation is suited to more limited problems.

Which Sinuses Can and Cannot Be Treated

The balloon is designed to dilate the natural openings of the frontal (forehead), maxillary (cheek), and sphenoid (deep behind the nose) sinuses. These sinuses each have a single, discrete opening that a balloon can be positioned in and widened.

The ethmoid sinuses, a honeycomb of small air cells between the eyes, cannot be treated with a balloon alone because they do not have one single opening to dilate. People whose disease mainly involves the ethmoid sinuses, or who have widespread disease affecting all the sinuses, are generally not candidates for balloon dilation by itself, though the balloon may be used alongside traditional surgery in these cases.

Who It Is Generally Considered For

Balloon sinuplasty is generally considered for carefully selected people whose sinus symptoms have persisted despite appropriate medical treatment. The evidence is strongest for limited chronic rhinosinusitis without nasal polyps and for recurrent acute sinusitis (repeated, separate sinus infections). A CT scan of the sinuses is considered a requirement before the procedure to confirm the diagnosis and map the blocked openings.

It is generally not appropriate as a standalone treatment when nasal polyps are widespread, when there is extensive fungal sinus disease, or when a tumor or certain advanced connective tissue disorders are suspected. It is also not an appropriate treatment for headache alone, or for people who have sinus symptoms but a normal CT scan, or whose CT shows disease but who have no symptoms.

How the Procedure Is Performed

A typical procedure follows a few basic steps. The sinus openings are first numbed and decongested. Under direct view with a thin endoscope (a lighted camera), a guide catheter is positioned at the targeted sinus opening, and a guidewire is advanced into the sinus. The balloon catheter is then threaded over the wire into the opening and inflated for a short time to widen it, then deflated and removed. The widened opening is inspected, and the process is repeated for each sinus being treated. No tissue is cut out.

Balloon sinuplasty can be performed either in an operating room under general anesthesia or in a doctor's office with the person awake under local anesthesia, sometimes with a mild oral sedative or pain medication beforehand. Early devices required X-ray guidance, but modern devices do not, which made the office setting practical. The office approach is often chosen for people who prefer to avoid general anesthesia or who have other medical conditions that make general anesthesia riskier.

When done in the operating room, balloon dilation is frequently combined with other procedures such as removal of polyps, ethmoid surgery, turbinate reduction, or septoplasty; these additional steps are much less common in the office setting, where the balloon is more often used on its own.

Recovery After the Procedure

Recovery from standalone balloon sinuplasty is usually quicker than recovery from traditional sinus surgery because no tissue is removed. In one multicenter study, people who had the procedure in the office returned to normal activities in a median of about 2 days, with nearly half back to normal within a single day, while those who had it in the operating room, often with additional procedures, took a median of about 5 days.

Common temporary experiences can include mild facial pressure or discomfort, some bloody nasal drainage, and congestion in the days after the procedure. After an office procedure, people are typically observed for a period before going home. The treating clinician provides specific aftercare instructions, which often include saline rinses.

What the Evidence Shows

Multiple randomized trials have found that balloon dilation improves sinus-related quality of life in people with limited chronic rhinosinusitis without polyps, with improvements comparable to FESS in appropriately selected patients at the follow-up points measured in these studies. A 2025 meta-analysis of randomized trials found that balloon dilation produced quality-of-life improvement similar to FESS, with shorter operating times and fewer complications, and no significant difference in the need for later revision surgery.

Some longer-term studies are encouraging: observational follow-up has reported sustained symptom improvement out to about 2 to 4 years. However, expert panels have cautioned that high-quality, long-term data remain limited, and the durability of balloon dilation compared with FESS is still debated, particularly the question of whether some people who have a balloon procedure will eventually need traditional surgery. Experts also note that the rapid growth in balloon use has raised concerns about appropriate patient selection and overuse, which is why careful candidacy assessment matters.

Risks and Possible Complications

Balloon sinuplasty is generally considered safe. Serious complications reported with sinus procedures, such as injury to the eye or its surrounding structures, or a leak of the fluid surrounding the brain, are reported less often with balloon dilation than with traditional surgery, though expert panels have noted that the available head-to-head data are too limited to firmly conclude the balloon is safer.

More common, minor issues can include pain, nasal bleeding, congestion, and infection after the procedure. As with any procedure, there is a small chance the targeted opening does not stay adequately widened, which could lead to the need for further treatment.

Alternatives and Combined Approaches

Alternatives to balloon sinuplasty include continued or optimized medical therapy, such as nasal steroid sprays, saline or medicated rinses, treatment of allergies, and courses of antibiotics or oral steroids when appropriate, and traditional functional endoscopic sinus surgery for disease that is more extensive or involves polyps.

Balloon dilation is often used not as a replacement for surgery but as part of a combined or "hybrid" approach, where the balloon opens the frontal, maxillary, or sphenoid sinuses while conventional surgical instruments address the ethmoid sinuses, remove polyps, or correct a deviated septum. This lets the surgeon tailor the extent of the procedure to the pattern and severity of each person's sinus disease.