A Case of Silent Sinus Syndrome

Dr. Smith and Dr. Reddy walk through a real patient case of silent sinus syndrome, a chronic sinus condition that often causes little to no symptoms yet can lead to serious complications if left untreated. Learn how it is diagnosed, why early treatment matters, and how minimally invasive in-office procedures are changing outcomes for patients.

What you’ll learn:

• What silent sinus syndrome is and how it differs from typical chronic sinusitis
• Why patients with this condition often have minimal or no symptoms, and what subtle signs to watch for
• How untreated silent sinus syndrome can affect the eye and surrounding structures over time
• What modern, minimally invasive treatment options are available, including in-office balloon dilation

Think you might have sinus issues that have gone undiagnosed? Take our Sinus Quiz to find out if your symptoms point to something that deserves a closer look.

What Is Silent Sinus Syndrome?

Silent sinus syndrome, also called atelectatic sinus syndrome, is a chronic condition in which a sinus becomes completely obstructed and gradually contracts over time. Unlike a typical sinus infection, which causes noticeable pain, pressure, and congestion, silent sinus syndrome often develops without any of those classic warning signs. In some cases, patients have no symptoms at all.

The condition typically affects the maxillary or frontal sinuses and develops slowly over years or even decades. Because the obstruction cuts off normal drainage, chronic inflammation builds up inside the sinus. Over time, the body responds by contracting the sinus cavity in what appears to be an attempt to contain the infection and prevent it from spreading.

A Real Patient Case From Our Office

During this episode of the We Nose Noses podcast, Dr. Smith described a 50-year-old patient from Marlton, New Jersey, who came in with complaints of post nasal drip and fullness in one ear. She had no significant history of sinus problems or reflux, and her symptoms had been present for several months without improvement.

During her physical exam, the doctors noticed that one of her turbinates appeared to be displaced out of its normal position, shifted toward the orbit on the left side. After trying nasal steroid sprays to reduce inflammation without success, a CAT scan was ordered. The imaging revealed a chronic, silent sinus infection affecting the frontal sinus, the sinus located above the eye. The frontal recess and middle turbinate had been essentially suctioned closed from years of obstruction, a hallmark finding of this condition.

She was treated with an in-office balloon dilation of the frontal sinus, along with removal of a few anterior ethmoid air cells. She went home the same day, experienced minimal bleeding and discomfort, and returned to normal activities with little to no lost work time.

Symptoms of Silent Sinus Syndrome

What makes this condition particularly challenging is how quietly it can develop. As Dr. Reddy explained during the podcast, patients may fall into several categories:

• Completely asymptomatic, with the condition discovered incidentally on imaging ordered for an unrelated reason
• Mildly symptomatic, with subtle findings like ear fullness on one side or mild pressure on one side of the face
• More significantly affected, with visible changes to the appearance of one eye over time

That last point is worth understanding more closely. Because the sinuses act as a protective cushion around the eyes and the brain, when a sinus cavity begins to contract, the surrounding structures can shift. Patients may notice that one eye appears slightly sunken or positioned lower than the other, sometimes noticing the change in photographs before they realize it in the mirror. This displacement of the eye is called enophthalmos, and it is one of the more serious consequences of untreated silent sinus syndrome.

Why Early Treatment Matters

Unlike most patients with chronic sinusitis, who typically seek treatment because their quality of life has been significantly affected, patients with silent sinus syndrome often need to be counseled differently. As Dr. Smith noted, the goal of treatment in these cases is not just symptom relief. It is about preventing future complications.

If left untreated, silent sinus syndrome can lead to:

• Progressive contraction of the sinus cavity
• Increasing displacement of the eye (enophthalmos)
• Double vision
• Spread of chronic infection to adjacent areas, including the eye socket or brain
• The eventual need for more complex procedures, such as orbital implants, to correct eye position

Early intervention can halt the progression of the condition and prevent the need for more invasive corrective procedures down the road. As Dr. Smith explained, once significant eye changes occur, correcting them becomes far more complex.

How Silent Sinus Syndrome Is Diagnosed

Diagnosis typically begins with a thorough history and physical examination in the office. A nasal endoscopy may reveal displaced anatomical structures, as was the case with the patient discussed in this episode. If findings suggest a sinus abnormality, a CT scan of the sinuses is ordered to get a detailed view of the sinus anatomy and identify any obstruction, contraction, or chronic disease.

In some cases, the condition is discovered incidentally on imaging ordered for an unrelated concern such as a headache workup, a dental procedure, or another medical evaluation.

Treatment Options: Minimally Invasive Approaches

Historically, treating silent sinus syndrome required general anesthesia and more aggressive surgical intervention to open and clean the affected sinus. Today, advances in minimally invasive techniques have changed the picture significantly for many patients.

As discussed in this episode, in-office balloon dilation of the sinuses has become an effective option when the anatomy is favorable. During this procedure, a small balloon is used to gently open the blocked sinus passage, restoring drainage and ventilation without the need for large incisions or a hospital stay. Patients can typically walk out of the office the same day and return to normal activities quickly.

For cases involving a thick, gel-like fungal buildup called a fungal ball in the maxillary sinus, newer instrument technologies now allow smaller openings to access and clear the sinus compared to the wide openings that were once required. Whether a procedure is best performed in the office or in the operating room depends on each patient’s individual anatomy, the severity of the disease, and other clinical factors. You can learn more about how that decision is made by listening to our episode on whether to get your sinus procedure done in the office or operating room.

When Ophthalmology Gets Involved

In cases where eye changes are present or suspected, collaboration with an ophthalmologist may be necessary. Because the orbital floor sits directly above the maxillary sinus, significant sinus contraction can affect eye position and alignment. These cases require a coordinated approach to address both the underlying sinus disease and any resulting changes to the eye.

Sinus Problems Don’t Always Make Themselves Known

Silent sinus syndrome is a reminder that not all sinus disease announces itself loudly. A condition that develops over years without significant symptoms can still cause meaningful harm if it goes unaddressed. Whether you have unexplained ear fullness, subtle pressure on one side of your face, or simply want a thorough evaluation of your sinus health, the team at NJ ENT is experienced in identifying and treating even the most atypical presentations of sinus disease.

To watch the CT scan images discussed in this episode, be sure to check out the video version of this podcast.

Schedule Your Consultation

If you are experiencing symptoms that might be related to your sinuses, or if you have been told you may need sinus surgery and want a second opinion, we encourage you to schedule a consultation with the specialists at NJ ENT. Our team offers thorough evaluations and a full range of minimally invasive treatment options to help you find relief and protect your long-term health. Contact us today to get started.