ENT · Voice · London
Laryngeal and pharyngeal endoscopy, flexi-nasal endoscopy of the throat and voicebox — the first-line test for hoarseness.
A flexible nasal endoscopy of the pharynx and larynx (flexi-nasal endoscopy / FNE) — the first-line ENT test for hoarseness, globus sensation, laryngopharyngeal reflux and voice change. Performed by consultant ENT or SLT in outpatients.
Key facts
- 01
Definition
Flexible endoscopy of the pharynx and larynx via the nose (flexi-nasal endoscopy / FNE).
- 02
Outpatient office procedure
Performed in an ENT clinic room — no theatre, no admission, no sedation.
- 03
Topical lidocaine to nose only
A short spray of local anaesthetic and decongestant to one nostril — no general anaesthetic.
- 04
5–10 minute test
The scope is passed, images captured, and the endoscope removed in under ten minutes.
- 05
Consultant ENT or SLT
Performed by a consultant ENT surgeon or a specialist speech and language therapist.
- 06
Video recording
Findings are captured on video for the record, MDT review and comparison over time.
Preparation and the test
From consultation to report — what happens, in order.
The whole visit — consultation, endoscopy and written plan — usually fits inside a single outpatient appointment.
Phase 1 · Before your test
Consultation and preparation
Phase 2 · On the day
5–10 minutes at the clinic
Phase 3 · After
Report and plan
- 01
Before
ENT / voice consultation
A focused history of your hoarseness, reflux, cough or voice change — with singing or professional voice history noted.
- 02
Before
No fasting required
Eat, drink and take medication as normal before the appointment.
- 03
On the day
Topical decongestant + lidocaine
A short spray to one nostril to shrink the mucosa and numb the passage — takes a couple of minutes to work.
- 04
On the day
Flexible endoscope passed via nose
A slim flexible endoscope is gently passed through the nose to the back of the throat.
- 05
On the day
Pharynx, base of tongue, larynx
The pharynx, tongue base, vocal cords and glottis are systematically inspected as you breathe, speak and swallow.
- 06
On the day
Optional stroboscopy
For voice complaints, stroboscopy lets the clinician study vocal-cord vibration in slow motion.
- 07
After
Written report with plan
A written report with images, a diagnosis and a concrete next step — voice therapy, PPI trial, microlaryngoscopy or MDT referral.
What it shows
When flexi-nasal endoscopy is the right test.
FNE gives a direct view of the pharynx and larynx — the fastest way to characterise voice, swallowing and airway complaints in outpatients.
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Laryngeal cancer
The first-line test for suspected laryngeal malignancy on a 2-week-wait pathway.
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Vocal cord palsy
Detects unilateral or bilateral cord palsy — often post-surgical, cardiac or malignant in origin.
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Vocal cord polyps / nodules
Characterises benign lesions of the vocal cords in singers and heavy voice users.
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Laryngopharyngeal reflux
Identifies posterior laryngeal changes typical of acid and non-acid reflux.
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Post-radiotherapy laryngeal fibrosis
Assesses cord mobility and mucosal changes after head and neck radiotherapy.
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Chronic laryngitis
Documents chronic inflammatory change from smoking, reflux or voice overuse.
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Post-tonsillectomy assessment
Inspects the tonsillar bed and pharynx after tonsillectomy for bleeding or slow healing.
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Red flag: laryngeal mass or hoarseness > 3 weeks — 2-week-wait ENT
Persistent hoarseness beyond three weeks warrants urgent 2-week-wait ENT referral.
Next steps
What treatment can follow a flexi-nasal endoscopy.
The report ends with a concrete plan — one or more of the following, depending on what the endoscopy shows.
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Voice therapy
Structured sessions with a specialist speech and language therapist — the first line for most functional voice disorders.
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Anti-reflux therapy (PPI + alginate)
A trial of proton pump inhibitor and alginate for laryngopharyngeal reflux, with follow-up FNE to confirm response.
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Steroid injection into vocal cord
Office-based intralesional steroid for selected polyps, scars and inflammatory lesions.
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Microlaryngoscopy for lesion removal
Day-case theatre procedure for biopsy or excision of vocal cord lesions under general anaesthetic.
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Head and neck oncology MDT
Where malignancy is suspected or confirmed, referral into the specialist head and neck MDT for staging and treatment planning.
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Botulinum for spasmodic dysphonia
Targeted botulinum toxin injection to the vocal cord for adductor spasmodic dysphonia.
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Vocal cord medialisation for palsy
Medialisation thyroplasty or injection medialisation to restore voice in unilateral vocal cord palsy.
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Structured ENT follow-up
A defined follow-up interval with repeat FNE to document response to treatment.
Red flags
When flexi-nasal endoscopy is urgent, not routine.
Any of the following in an adult should trigger urgent ENT review — often on the 2-week-wait head and neck pathway.
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Laryngeal mass
Any visible mass on the vocal cord, supraglottis or pharynx warrants urgent 2-week-wait referral.
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Vocal cord palsy (post-op / cardiac cause)
New palsy after thyroid, thoracic or cardiac surgery — or with a mediastinal cause — needs urgent work-up.
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Rapidly progressive hoarseness
Hoarseness worsening over days to weeks is a red flag for malignancy or acute nerve injury.
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Neck lump + hoarseness
A palpable neck lump with voice change is a classic 2-week-wait head and neck presentation.
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Adult-onset chronic cough
New chronic cough in an adult, especially a smoker, warrants urgent airway inspection.
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Post-tonsillectomy bleeding
Bleeding after tonsillectomy is a surgical emergency — 999 or nearest ED, not a private slot.
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Aspiration on FNE
Silent aspiration observed on FNE requires urgent swallow assessment and airway safety planning.
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Recurrent laryngeal nerve injury
Suspected iatrogenic nerve injury needs prompt ENT and, where relevant, surgical review.
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Post-radiotherapy laryngeal necrosis
Late radiotherapy necrosis is rare but serious — urgent head and neck oncology input is needed.
Sources
The guidance this guide is built on.
Reviewed against UK and European standards for laryngeal endoscopy and voice care. Reviewed 2026-07-30, next review 2027-07-30.
- 01 Reference
ENT UK. Clinical guidance on laryngeal and voice disorders.
ENT UK. Clinical guidance on laryngeal and voice disorders. - 02 Reference
British Voice Association. Standards for voice assessment and therapy.
British Voice Association. Standards for voice assessment and therapy. - 03 Reference
Royal College of Speech and Language Therapists. FNE and stroboscopy guidance.
Royal College of Speech and Language Therapists. FNE and stroboscopy guidance. - 04 Reference
European Rhinologic Society. Rhinological and endoscopic practice standards.
European Rhinologic Society. Rhinological and endoscopic practice standards.
Frequently asked
Everything we get asked about flexi-nasal endoscopy.
Quick answers on comfort, fasting, who performs it, urgency and what happens next.
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What is laryngeal and pharyngeal endoscopy?
A flexible nasal endoscopy (flexi-nasal endoscopy, or FNE) — a slim flexible endoscope passed through the nose to inspect the pharynx, base of tongue and larynx. It is the first-line ENT test for hoarseness, globus, reflux and voice change.
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Does the test hurt?
No. A short spray of topical decongestant and lidocaine to one nostril numbs the passage; most patients describe the scope itself as odd rather than painful, and the whole test is over in 5–10 minutes.
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Do I need to fast?
No fasting is required. Eat, drink and take medication as normal before your appointment.
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Who performs the test?
A consultant ENT surgeon or a specialist speech and language therapist (SLT) — often with stroboscopy for voice patients — in an outpatient clinic room.
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When is this test urgent?
Hoarseness lasting more than three weeks, a visible neck lump with voice change, or rapidly progressive voice change all trigger an urgent 2-week-wait ENT referral, not a routine slot.
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What happens after the report?
You receive a written report with images and a concrete next step — voice therapy, a PPI trial, steroid injection, microlaryngoscopy, or referral into the head and neck oncology MDT if a lesion needs staging.
Related tests
Looking for a different test?
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FEES swallow test
Flexible endoscopic evaluation of swallowing — the same scope, focused on swallow safety.
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ENT assessment
A full consultant ENT consultation covering ear, nose and throat symptoms.
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One-stop head and neck diagnostic clinic for lumps, hoarseness and swallowing.
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Crohns Disease
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Colectomy
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Cholecystectomy
Related treatment option.
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In practice, in London
What laryngeal pharyngeal endoscopy looks like on the ground in London
With laryngeal pharyngeal endoscopy, the London question is usually about report turnaround and the radiologist reading it — not whether the scan is available. The NHS route for laryngeal pharyngeal endoscopy is thorough, but the queue is real. Most patients we speak with have been told to expect anywhere from a handful of weeks to several months, depending on their local trust and how the referral is graded. Going private in London usually collapses that window to a matter of days — often the same week if the diary allows. It isn’t about jumping a queue so much as buying time back while you still have the flexibility to plan around it.
A typical private booking for laryngeal pharyngeal endoscopy in London starts with a consultant conversation — sometimes in person on Harley Street or Marylebone, sometimes on video if that suits better. Any imaging or diagnostics happen at a nearby CQC-registered facility, and reports usually land within 24 to 72 hours. The whole loop, from first call to written report, is often done inside a fortnight. For laryngeal pharyngeal endoscopy specifically, the difference between a routine report and a sub-speciality read is where private care earns its keep.
We’re careful about what a private pathway for laryngeal pharyngeal endoscopy can and can’t promise. It can compress a wait, put you in front of a subspecialist quickly, and get a proper report in your hands within a week. It can’t rewrite what the imaging or the bloods say. Setting that expectation up front tends to make the whole experience less stressful.