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Nasal Endoscopy in Gangnam, Seoul

Medically reviewed by Dr. Kim Yoo Suk, MD · Board-certified otolaryngologist · Former professor, Yonsei & Ajou University · Consultations in English

What is nasal endoscopy?

Nasal endoscopy is a diagnostic procedure in which an otolaryngologist inserts a slim rigid or flexible endoscope, a tube with a light and camera, into each nostril. The image appears on a monitor, showing structures that cannot be seen with a simple light: the septum, turbinates, middle meatus where most sinuses drain, the sphenoethmoidal recess and the nasopharynx behind the nose, where the Eustachian tubes open. It is the cornerstone of rhinology diagnosis.

Compared with looking through the nostril with a headlight, an endoscope reaches around the turbinates and shows color, swelling, discharge and anatomy in fine detail. It can also be used to take a sample of pus for culture or a small tissue biopsy when needed, and recorded images make it easy to compare findings at later visits.

Who is it for?

Endoscopy helps evaluate a wide range of nasal and related problems, including:

• Chronic nasal congestion and suspected deviated septum
• Chronic sinusitis and nasal polyps
• Postnasal drip, recurrent nosebleeds and loss of smell
• One-sided symptoms that could indicate a tumor
• Follow-up after nasal or sinus surgery

How it is done at our Gangnam clinic

Dr. Kim Yoo Suk, a former clinical assistant professor of rhinology at Yonsei University and assistant professor at Ajou University, performs endoscopy during the consultation itself. The process is simple:

1. A decongestant and topical anesthetic spray are applied to shrink and numb the lining.
2. After a short wait, the endoscope is gently passed along the nasal floor and between the turbinates.
3. Both sides are examined, usually within a few minutes.
4. Dr. Kim reviews the images with you on screen and explains them in English.

Findings guide the next step, such as a sinus CT scan, an allergy test, medication, or surgery. Because results are available immediately, endoscopy fits the clinic's same-day testing and consultation approach.

Recovery and aftercare

No recovery time is needed. The numbing sensation may make the nose and throat feel slightly thick for 20 to 30 minutes; wait until it fades before eating or drinking hot liquids. You can return to work, study or sightseeing right away.

Risks and limitations

Nasal endoscopy is very safe. Some people feel pressure, a tickle or watery eyes, and a minor nosebleed occasionally occurs, especially with fragile vessels or blood-thinning medication. Endoscopy shows surfaces and openings, but it cannot see deep inside the sinuses or bone; that is why CT is added when disease extends beyond view. Tell the doctor if you take anticoagulants or have had reactions to local anesthetics.

Practical information for foreign patients

Walk-ins and phone calls (+82-10-5344-4464) are welcome, and endoscopy is commonly completed at the first visit. Records and an English medical certificate can be provided for insurance or for your doctor at home. Read more on the nose clinic page, find directions from Gangnam-gu Office Station, or learn about Dr. Kim Yoo Suk.

Frequently asked questions

Does nasal endoscopy hurt?

Most patients find it mildly uncomfortable rather than painful. A numbing and decongestant spray is used first, so you mainly feel pressure or a tickling sensation. The examination itself typically takes only a few minutes for both sides.

Do I need to prepare for nasal endoscopy?

No special preparation is needed. You can eat normally beforehand. Let the doctor know about blood thinners, allergies to anesthetics, or recent nosebleeds. Contact lens wearers may want glasses handy in case the eyes water.

Can nasal endoscopy replace a CT scan?

Not always. Endoscopy shows the nasal surfaces and sinus openings in real time, while CT shows the inside of the sinuses and bony anatomy. Dr. Kim orders CT only when endoscopic findings or symptoms suggest deeper disease or surgery is planned.

This page is general medical information written and reviewed by an ENT specialist. It is not a diagnosis or a guarantee of results; every treatment carries risks, and suitability is decided only after an examination. In an emergency in Korea, call 119.