Otolaryngology Dissertation Topics: Researchable ENT Ideas From Ear to Larynx

Questions to Settle Before You Commit to an ENT Topic

• Does my idea need NHS patients, and if so, can I realistically get approval within my timetable, or should I build it on audit data, published trials or a large dataset?
• Is there a NICE recommendation I can measure practice against, or would I only be restating it?
• Which outcome measure actually fits my question: pure-tone thresholds, a speech-in-noise score, SNOT-22, VHI-10 or MDADI?
• Will my question survive the small patient numbers typical of one ENT department?
• Is my topic truly otolaryngology, or does it sit more naturally in audiology, speech and language therapy or oncology?

These otolaryngology dissertation topics cover otology, vestibular medicine, rhinology, laryngology, paediatric ENT and head and neck cancer as they appear in NHS practice. Facial plastic surgery, thyroid surgery and adult sleep surgery appear only where they overlap with those areas. Each topic names the evidence it rests on and the level it suits, because most undergraduate ENT projects work best as systematic reviews or audits, while primary patient studies usually belong at Master’s or doctoral level.

Several topics depend on NICE guidance that is reviewed over time. Position correct as of September 2026; check NICE for the current status of any guidance before you build a proposal on it.

Otology and Hearing Loss Research Topics

Hearing research rewards students who pick one clearly defined population and one measurable outcome. The first group of topics uses UK guidance as a fixed standard, which makes audit-style projects straightforward to design.

1. How far did NICE TA566’s shift to an 80 dB HL threshold and the Arthur Boothroyd word test widen adult cochlear implant referrals at one UK implant centre?

Before the 2019 guidance, NICE defined severe to profound deafness as thresholds of 90 dB HL at 2 and 4 kHz, with adequate hearing aid benefit judged on BKB sentence testing. TA566 lowered the threshold to 80 dB HL at two or more of five frequencies and switched to a phoneme score on the AB word test. A study of referral and candidacy data at one centre could examine whether the change reached older adults and people with some residual low-frequency hearing. It suits a Master’s student with access to anonymised service data. An interrupted time series is stronger than a simple before-and-after comparison, because referral numbers also move with population ageing and audiology capacity.

2. Are adults attending memory clinics referred for hearing assessment in line with NICE NG98 recommendations 1.1.8 and 1.1.9?

NG98 asks clinicians to consider audiology referral for adults with suspected or diagnosed dementia or mild cognitive impairment, and to repeat the assessment every two years if hearing loss has not been diagnosed. In plain terms, the project checks whether one clinic does what the guideline suggests. It works well at undergraduate level as a clinical audit: pick a sample of records, set the standard, measure the gap, and suggest a change. A sample research question would be: “What proportion of new memory clinic patients had documented hearing status or an audiology referral within six months?”

3. To what extent does the UK Biobank speech-in-noise result predict incident dementia once hearing aid use is taken into account?

UK Biobank includes a digit triplet speech-in-noise test, which makes it one of the few large datasets where functional hearing, not just self-report, can be linked to later diagnoses. The question matters because the ACHIEVE trial (Lancet, 2023) did not show slower cognitive decline across its whole sample, with a possible benefit only in a higher-risk subgroup. So the observational link needs careful handling. This is PhD territory or an ambitious quantitative Master’s using Cox regression in R or Stata. Access requires an approved project and a fee, so allow months. The main pitfall is reverse causation: early cognitive decline can itself worsen speech-in-noise performance, so exclude the first years of follow-up in a sensitivity analysis.

4. How consistently is NG98’s urgent referral advice for adults of Chinese or south-east Asian family origin with unexplained middle ear effusion followed?

NG98 suggests considering urgent ENT referral for these adults when an effusion is not linked to an upper respiratory tract infection, because a new effusion can be an early sign of nasopharyngeal carcinoma, which is more common in these groups. A Master’s case-note review of ENT referrals could test whether the referral pathway reflects this. Feasibility is the difficult part. Ethnicity recording is often incomplete, and that gap can itself become a legitimate finding. Numbers will be small, so plan a descriptive study rather than one built on significance testing.

5. Microsuction versus electronic irrigation in community earwax services: which gives fewer repeat visits and complications?

NG98 advises against manual syringing and allows trained staff to use electronic irrigation, microsuction or manual removal. An undergraduate systematic review could compare the methods on first-attempt clearance, otitis externa, perforation and patient-reported discomfort. Alternatively, a service evaluation across two community clinics that use different methods offers a practical Master’s design. Keep the outcomes narrow; “patient satisfaction” alone rarely separates the two techniques.

6. Whether primary intratympanic steroids outperform oral prednisolone for idiopathic sudden sensorineural hearing loss when recovery is judged on one common definition

Trials in this area disagree partly because they define both the condition and recovery differently. Many use a loss of at least 30 dB across three contiguous frequencies developing within 72 hours, but recovery criteria vary widely. A Master’s systematic review with meta-analysis could group studies by recovery definition and test whether the apparent benefit survives. Common pitfalls include ignoring the spontaneous recovery that happens without treatment and pooling studies with very different times from onset to treatment.

7. Extended high-frequency audiometry for detecting cisplatin ototoxicity in adults having chemoradiotherapy for head and neck cancer

Cisplatin damages the basal cochlea first, so standard audiograms that stop at 8 kHz can miss early change. A prospective cohort with baseline, mid-treatment and post-treatment testing, graded against ASHA ototoxicity criteria, suits a PhD or a well-supported Master’s with an oncology team on board. Because it involves NHS patients, it needs full research approval. For a smaller project, an audit of whether baseline audiograms are done before cisplatin starts is realistic. The paediatric otoprotection trials of sodium thiosulfate (ACCL0431 and SIOPEL-6) give a useful comparison for the discussion chapter.

8. Can audiologist-delivered CBT match psychologist-led CBT for tinnitus-related distress, as NICE NG155’s first research recommendation asks?

NICE’s tinnitus guideline found evidence that CBT, mindfulness-based approaches and ACT help tinnitus-related distress, but it flagged an open question about CBT delivered by trained professionals other than psychologists, such as audiologists. That makes this one of the more current otolaryngology research topics with an official gap already stated. A Master’s student could run a systematic review of non-psychologist-delivered CBT, with the Tinnitus Handicap Inventory or Tinnitus Functional Index as outcomes. At PhD level, a feasibility study inside an NHS audiology service is possible. Keep the comparison fair: trials often differ in session number as well as therapist background.

Vestibular Disorders and Balance

Dizziness research is diagnostically messy, which is exactly why it rewards tight definitions. Anchor every vestibular topic to a named diagnostic criterion so your sample is defensible.

9. How far do video head impulse testing and caloric testing agree in diagnosing unilateral vestibular hypofunction?

vHIT tests the high-frequency vestibulo-ocular reflex, while caloric testing reflects low-frequency function. Disagreement between them is therefore partly physiological, not simply test error, and several conditions show a typical “dissociation” pattern. A Master’s retrospective study of a balance clinic’s paired results, using sensitivity and agreement statistics, is achievable with service approval. The pitfall is treating calorics as a perfect reference standard.

10. How often do dizzy patients meet both the Bárány Society criteria for vestibular migraine and those for Ménière’s disease?

Both conditions can cause episodic vertigo and aural symptoms, and consensus criteria from the Bárány Society (developed with the International Headache Society for vestibular migraine) help separate them. A case-note study applying both sets of criteria to one clinic’s patients could estimate overlap and describe how the final diagnosis was reached. It suits Master’s level. Students interested in the headache side may also find useful angles among the neurology research ideas on the site.

11. What role does vestibular rehabilitation combined with CBT play in persistent postural-perceptual dizziness?

PPPD received formal diagnostic criteria in 2017, so the treatment literature is still relatively young. An undergraduate systematic review could compare vestibular rehabilitation alone with combined psychological approaches, using the Dizziness Handicap Inventory as the main outcome. The topic suits students who want a psychology-facing ENT project without recruiting patients.

12. Is Dix-Hallpike screening for BPPV routinely done in falls clinic assessments of older adults?

BPPV is easy to miss in older people, who may describe imbalance rather than spinning, and it is treatable with a repositioning manoeuvre. A service evaluation of one falls clinic’s assessment records suits an undergraduate or early Master’s student. A sample question: “What proportion of patients reporting dizziness had a documented positional test?”

Rhinology, Chronic Rhinosinusitis and Smell

Rhinology offers strong patient-reported outcome measures, which helps students design clean studies. SNOT-22 in particular now carries policy weight in England.

13. How NICE TA1134’s SNOT-22 threshold of 50 and prior-surgery requirement shape access to dupilumab for chronic rhinosinusitis with nasal polyps

In February 2026, NICE’s dupilumab appraisal for severe nasal polyps recommended the drug as an add-on to intranasal steroids for adults whose disease is not controlled by systemic steroids or surgery, who have had at least one sinus operation, and who have a SNOT-22 score of at least 50. It replaced an earlier terminated appraisal. During the appraisal, a patient group raised that people with both severe asthma and nasal polyps could already access the drug through their asthma, while those with polyps alone could not. A Master’s documentary analysis of the committee papers, or a policy analysis of eligibility thresholds, would suit students interested in how evidence becomes access. Those leaning towards cost-effectiveness may also find the site’s health economics dissertation topics useful. Position correct as of September 2026; check NICE for any later review.

14. Do type 2 inflammatory markers predict nasal polyp recurrence after endoscopic sinus surgery?

Tissue eosinophil counts and related type 2 markers are widely studied as recurrence predictors, and they also underpin decisions about biologics. A PhD could build a cohort linking histology to recurrence over several years; a Master’s student could run a systematic review of prognostic studies. The biology overlaps with work on the site’s immunology topics list. A common pitfall is inconsistent eosinophil cut-offs across studies, so extract them carefully.

15. How well do adults with post-viral smell loss stick to olfactory training, and does adherence change outcomes?

Olfactory training is low-cost and widely advised, yet adherence over months is poorly measured. A Master’s project could use a smell identification test (for example Sniffin’ Sticks or UPSIT) at two time points alongside an adherence diary. Recruiting through a smell clinic needs research approval; a review of existing trials that reported adherence is the lower-risk alternative.

16. Are adults referred to ENT with chronic rhinosinusitis given an adequate trial of intranasal steroids and saline first, as EPOS 2020 advises?

EPOS 2020 sets out a stepwise approach before secondary care referral. An undergraduate audit of referral letters against that standard is simple to design and genuinely useful to a department. Define “adequate trial” in advance, including technique and duration, or the audit becomes subjective.

17. Does Krouse stage predict recurrence of sinonasal inverted papilloma after endoscopic resection?

Inverted papilloma is benign but recurs and occasionally transforms, so staging and surgical approach matter. A Master’s systematic review can examine recurrence by Krouse stage and by attachment-site management. The condition is uncommon, so single-centre primary data would rarely give enough cases.

Laryngology, Voice and the Pharynx

Laryngology topics suit students who can combine clinical measures with patient-reported ones. Several recent UK trials give firm anchors.

18. What the TOPPITS trial changed: proton pump inhibitor use for persistent throat symptoms after its null result

The UK TOPPITS trial (BMJ, 2021) found lansoprazole no better than placebo for persistent throat symptoms often labelled as laryngopharyngeal reflux. A Master’s project could examine whether local practice or referral guidance changed afterwards. One trap: national prescribing data such as OpenPrescribing shows volumes by practice but not the indication, so you cannot isolate throat-symptom prescribing from it. A clinic-level audit of new laryngology referrals is more precise.

19. How closely do VHI-10 scores match clinician GRBAS ratings in secondary school teachers with voice complaints?

Teachers are a classic occupational voice group, and the gap between how a voice sounds and how much it bothers the speaker is clinically important. At undergraduate level, a survey using VHI-10 alone is achievable without NHS approval if recruitment is through schools with university ethics. Adding clinician perceptual ratings moves it to Master’s level.

20. Does early injection laryngoplasty improve outcomes in unilateral vocal fold paralysis after thyroid or chest surgery?

Some studies suggest early temporary injection may reduce the later need for permanent medialisation. A Master’s systematic review can compare early and delayed intervention using voice outcomes and the rate of subsequent framework surgery. Watch for selection bias, since patients injected early may differ from those observed.

21. Transoral laser microsurgery versus radiotherapy for T1a glottic cancer: how do voice outcomes compare?

Both treatments give high local control for early glottic cancer, so voice quality and patient preference often decide between them. A Master’s systematic review focused on voice outcomes, using VHI and acoustic measures, fits well. Avoid overreaching into survival comparisons, where the evidence is dominated by non-randomised studies.

22. After the NATTINA trial, how should adults with recurrent acute tonsillitis be selected for tonsillectomy?

The UK NATTINA trial (Lancet, 2023) compared tonsillectomy with conservative management in adults with recurrent tonsillitis and reported fewer sore throat days after surgery. A Master’s project could audit local listing decisions against the trial’s inclusion criteria, or review how trial evidence has fed into commissioning thresholds. It is a good choice for students who want an ENT topic grounded in recent UK evidence.

Head and Neck Cancer Dissertation Ideas

Head and neck oncology sits across surgery, oncology, speech and language therapy and dietetics, so these ENT dissertation topics suit multidisciplinary projects. Those focused on the nursing side can compare them with the site’s oncology nursing dissertation topics.

23. Why did cetuximab fail to replace cisplatin in the De-ESCALaTE HPV trial, and what does that mean for de-escalation in HPV-positive oropharyngeal cancer?

De-ESCALaTE (Lancet, 2019) found cetuximab offered no reduction in overall toxicity and worse tumour control than cisplatin in low-risk HPV-positive disease. A Master’s critical review could set this against other de-escalation strategies, including surgical approaches tested in the UK-led PATHOS trial. The strength of this topic is argument rather than data collection.

24. How has PET-CT surveillance after chemoradiotherapy changed planned neck dissection rates since the PET-NECK trial?

PET-NECK (NEJM, 2016) showed PET-CT-guided surveillance was non-inferior to planned neck dissection for survival while avoiding many operations. A Master’s audit of one multidisciplinary team’s practice can test adoption and follow-up. Define in advance how equivocal scans were handled, since that decision drives much of the variation.

25. Does socioeconomic deprivation predict late-stage presentation of oral cavity cancer in England?

This question fits a PhD using cancer registration data held by the National Disease Registration Service, linked to deprivation indices. Access requests go through NHS England’s data access process and can take many months, so Master’s students should consider published registry statistics or a systematic review instead. The main pitfall is treating deprivation as one measure; check whether income, education or access domains drive the association.

26. What are swallowing outcomes on the MDADI after transoral robotic surgery for oropharyngeal cancer?

The MD Anderson Dysphagia Inventory is widely used after head and neck treatment, making pooled comparison feasible. A Master’s systematic review could compare transoral surgery with primary chemoradiotherapy on swallowing outcomes, noting the difference between patient-reported and instrumental measures. Dysphagia rehabilitation also makes a strong speech and language therapy angle.

27. What do young men in the UK know about HPV-related oropharyngeal cancer since gender-neutral vaccination began in September 2019?

The UK extended HPV vaccination to boys in 2019 and moved to a single-dose schedule for the routine adolescent programme from September 2023. Measuring a cancer incidence effect is not yet realistic because the disease appears decades after infection. However, an undergraduate survey of awareness among university students is achievable with university ethics approval. At PhD level, modelling expected effects on oropharyngeal cancer is a stronger design.

Paediatric ENT Topics

Paediatric projects involving children or parents need extra care with consent and safeguarding, so many Master’s students choose review or audit designs here. The 2023 NICE glue ear guideline makes several topics timely.

28. How do parents choose between grommets and hearing aids for persistent otitis media with effusion under NICE NG233?

NICE’s guideline on glue ear in under-12s, published in 2023, updated the earlier guidance and supports shared decision-making between surgical and non-surgical options for hearing loss from persistent effusion. A qualitative Master’s study using semi-structured interviews with parents, analysed thematically, fits the question well. It needs NHS research approval if recruited through clinics, so build in time.

29. Has prescribing of nasal steroids for glue ear fallen since NG233 advised against them?

NG233 recommends against nasal steroids for otitis media with effusion, which may be a change for some prescribers. An undergraduate audit of primary care referral letters or ENT clinic records, compared before and after the guideline, is simple and measurable. As with topic 18, national prescribing volumes cannot isolate the indication, so local records are needed.

30. How consistently are babies referred from newborn hearing screening tested for congenital CMV within the first 21 days?

Congenital CMV is a leading non-genetic cause of childhood hearing loss, and testing saliva or urine in the first three weeks is needed to distinguish congenital from later infection. A Master’s service evaluation of one audiology pathway could measure timeliness and missed tests. Results are directly useful to the service, which helps with access.

31. Is paediatric post-tonsillectomy haemorrhage more common after hot than cold dissection techniques?

The National Prospective Tonsillectomy Audit raised concern about haemorrhage with hot techniques, and the debate continues. A Master’s systematic review with meta-analysis can compare primary and secondary haemorrhage by technique. Separate primary bleeding (within 24 hours) from secondary bleeding, since the mechanisms differ.

Data, Diagnostics and Service Topics Across ENT

These current otolaryngology research topics cut across subspecialties and suit students with data or computing skills.

32. How well do deep learning models trained on otoscopic images hold up when validated on UK primary care images?

Many published models report high accuracy on images from a single centre, but performance often falls on images taken with different otoscopes and by different users. A Master’s or PhD computing-focused project could test external validity, using public otoscopy image datasets for training and a separately sourced test set. Spectrum bias is the main pitfall: images from specialist clinics overrepresent clear-cut disease.

33. Do grommet and tonsillectomy rates vary by deprivation across English regions?

Hospital Episode Statistics publishes procedure counts by OPCS code, which makes regional comparison possible without identifiable data. A Master’s secondary data analysis could examine variation and whether it tracks deprivation. Where published tables lack the breakdown you need, a data request is required, which takes time. Also remember that lower rates are not automatically “under-treatment”; they may reflect evidence-based restraint.

Worked Examples: From Topic to Aim and Objectives

Turning a topic into a proposal is easier when the aim is specific and each objective produces one measurable output. The research aims and objectives generator can help you draft variations, but the three examples below show the standard to aim for.

Example 1 (Undergraduate, topic 2)

Aim: To assess how far one memory clinic meets NICE NG98 recommendations on hearing assessment for adults with suspected dementia or mild cognitive impairment.

Objectives:

• To measure the proportion of new patients over twelve months with documented hearing status or an audiology referral.
• To compare referral rates between patients with and without self-reported hearing difficulty.
• To propose one pathway change and a re-audit standard.

Example 2 (Master’s, topic 9)

Aim: To evaluate agreement between video head impulse testing and caloric testing in adults investigated for suspected unilateral vestibular hypofunction.

Objectives:

• To calculate agreement statistics between the two tests across 24 months of clinic records.
• To describe diagnostic groups in which the tests disagree.
• To judge whether a vHIT-first testing sequence would have changed diagnoses.

Example 3 (PhD, topic 3)

Aim: To determine whether speech-in-noise performance in UK Biobank predicts incident dementia independently of hearing aid use and vascular risk.

Objectives:

• To estimate hazard ratios for incident dementia across speech-in-noise categories, adjusting for key confounders.
• To test whether associations persist after excluding the first five years of follow-up.
• To examine whether hearing aid use modifies the association.

Audit, Service Evaluation or Research? Choosing an Evidence Route

Your evidence route often decides whether an ENT dissertation can be finished on time. The Health Research Authority’s “Is my study research?” decision tool is the usual starting point in England, and your supervisor and local R&D office will confirm the answer.

Evidence route	Suits	Approval usually needed	Typical level
Clinical audit against NICE or EPOS	Topics 2, 12, 16, 29	Local audit registration, not NHS research ethics	Undergraduate, Master’s
Service evaluation	Topics 5, 9, 30	Local governance sign-off	Undergraduate, Master’s
Systematic review or meta-analysis	Topics 6, 11, 17, 20, 21, 26, 31	Usually none beyond university review	All levels
Survey outside the NHS	Topics 19, 27	University ethics	Undergraduate, Master’s
Secondary analysis of large datasets	Topics 3, 25, 33	Data access approval, often lengthy	Master’s, PhD
Prospective NHS patient study	Topics 7, 15, 28	Full NHS research approval	Master’s (supported), PhD

Sample size is often the hidden constraint in ENT, because many conditions are uncommon in a single department. Checking numbers early with the dissertation sample size calculator saves a redesign later, and the statistical test selector helps match agreement, survival or comparison questions to the right test.

Matching Otolaryngology Research Topics to Your Level

Level changes what counts as a realistic project more than it changes the subject area.

• Undergraduate and intercalated BSc: audits against a clear standard, focused systematic reviews and non-NHS surveys. Keep one outcome and one setting.
• Master’s (MSc, MRes, MCh): service evaluations, meta-analyses, qualitative interview studies and secondary data projects, with a stronger methods chapter and some critical appraisal of guidance.
• MD and PhD: prospective cohorts, trials, large linked datasets and modelling, with a contribution that goes beyond confirming existing guidance.

If you are still deciding between several ideas across different areas, the site’s broader medicine dissertation topics may help you compare ENT with neighbouring specialties. For students who want structured feedback on scope, methods or approvals, support with a medical dissertation is available as guidance and model work for learning, to be used in line with your university’s academic integrity policy.

Common Mistakes in ENT Dissertations

Choosing an area instead of a question. “Hearing loss in older adults” is a field, not a dissertation. Name the population, the measure and the comparison, as each topic above does.

Ignoring the approval timeline. Projects involving NHS patients can stall for months. Decide early whether an audit or review answers the same question.

Mixing outcome measures across studies. Pooling SNOT-22, VHI or recovery definitions that were measured differently weakens any review. Extract definitions first, then decide what can be combined.

Treating guidance as fact rather than as a standard. NICE recommendations are useful benchmarks, but a strong discussion also examines the evidence behind them and any research recommendations NICE itself made.

Forgetting small numbers. Conditions such as inverted papilloma or nasopharyngeal carcinoma rarely yield enough cases in one department for inferential statistics. Plan descriptive analysis or a review.

Next Steps for Narrowing Your ENT Topic

Once one topic stands out, the quickest test is to write it as a single research question and see whether it names a population, a measure and a setting. The research question generator can help you draft that question, and the guide on how to choose research topics covers ways to test feasibility with your supervisor. If you then need help turning the question into a structured plan, research proposal writing support can guide you through aims, methods and approvals.