{"title":"Management of a Piriform Sinus Fistula With Chronic Neck Infection in an Adult.","authors":"Alexandra McMillan, Stephanie Chen, Xiaoyang Hua","doi":"10.1177/00034894241280693","DOIUrl":"10.1177/00034894241280693","url":null,"abstract":"<p><strong>Objectives: </strong>A pyriform sinus fistula (PSF) is a rare congenital anomaly due to failed obliteration of the third or fourth pharyngeal pouch. Diagnosis and management of PSF remains controversial. We present a case of PSF and discuss its diagnosis and management.</p><p><strong>Methods: </strong>Case report and literature review.</p><p><strong>Results: </strong>A 26-year-old female with a chronic left lateral neck abscess was diagnosed with a left PSF. She underwent surgery through a combined approach to close the openings of the PSF, internally and externally. We first placed a blunted ET tube into the internal opening of the PSF. We then performed an external transcervical approach to close the PSF at the cricothyroid membrane. Briefly, after a neck debridement and washout of the chronic neck infection, we identified the recurrent laryngeal nerve (RLN) in Lore's triangle. We performed left hemithyroidectomy to facilitate the dissection and protection of the RLN to its entrance into the larynx. A flexible laryngoscope was then inserted into the left piriform sinus through the ET tube to guide external dissection by transillumination. The scar tissue attached to the superior pole of the left thyroid lobe was then ligated and divided along the cricothyroid membrane. Lastly, we cauterized the internal opening of the PSF. The patient has remained recurrence-free for 1.5 years with normal vocal cord mobility. Histopathology revealed presence of a squamous-lined tract adjacent to the thyroid tissue.</p><p><strong>Conclusions: </strong>Surgical treatment for patients with PSF should be aimed at closing the internal and external openings of the PSF, debriding chronic neck infection, and protecting the laryngeal nerves, instead of removing the entire tract. A concurrent hemithyroidectomy facilitates the identification and protection of the RLN, as well as excision of the tract. Differentiation between third and fourth branchial cleft fistulae may not be clinically necessary, as it is unlikely to alter the therapeutic plan.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"1029-1032"},"PeriodicalIF":1.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142300163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emily S Sagalow, Richard Wang, Jay Babu, Jo-Lawrence Bigcas, Oluwafunmilola Okuyemi
{"title":"Incidental Finding of Double Posterior Belly of Digastric Muscle in Head and Neck Cancer Patient.","authors":"Emily S Sagalow, Richard Wang, Jay Babu, Jo-Lawrence Bigcas, Oluwafunmilola Okuyemi","doi":"10.1177/00034894241284187","DOIUrl":"10.1177/00034894241284187","url":null,"abstract":"<p><strong>Objectives: </strong>The digastric muscles have important roles in swallowing, chewing, speech, and landmark identification during neck dissection. The posterior belly of the digastric muscle (PBDM) is often useful for defining boundaries in surgical neck dissection as it contributes to the carotid, submandibular, and submental triangles. The cadaveric prevalence rate of anatomic variations in the digastrics has been reported to be 31.4% of the population with most occurring in relation to the anterior belly of the digastric muscle (ABDM). Few reports describe variations in the PBDM. While anatomic variants of the digastric muscles do not present with clinical manifestations, they can be mistaken as neck masses and contribute to intraoperative complications.</p><p><strong>Methods: </strong>We present a case report of a 73-year-old male with a past medical history significant for Parkinson's Disease, who was incidentally found to have a duplicate PBDM intraoperatively while receiving surgical management of a left buccal squamous cell cancer.</p><p><strong>Results: </strong>Nine months prior to surgery, the patient began experiencing trismus and some mild dysphagia that were eventually worked up to reveal left buccal squamous cell carcinoma (SCC). Prior to this, the patient did not have clinical symptoms demonstrating dysfunction that could be related to or indicative of this anatomical abnormality preceding symptoms related to left buccal SCC growth. The procedure included a wide local excision, left modified radical neck dissection and left submental artery island flap with suprahyoid neck dissection. The superior duplicate PBDM was found to be overlying the stylohyoid muscle.</p><p><strong>Conclusions: </strong>It is important for surgeons operating in the head and neck to be aware of the possibility of this rare variation, and to be conscientious when it is identified so that it does not prohibit or limit a thorough dissection of the neck structures where oncologic clearance is paramount.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"1033-1036"},"PeriodicalIF":1.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carol Li, Matthew Smith, Sara Zak, Gregory Burg, Michael Rutter
{"title":"Long-Term Outcomes of Airway Management in 6 Children With Campomelic Dysplasia.","authors":"Carol Li, Matthew Smith, Sara Zak, Gregory Burg, Michael Rutter","doi":"10.1177/00034894241290098","DOIUrl":"10.1177/00034894241290098","url":null,"abstract":"<p><strong>Objective: </strong>This case series describes the outcomes of airway management, including airway reconstruction, in 6 patients with campomelic dysplasia and tracheostomy/ventilator dependence secondary to multilevel airway obstruction.</p><p><strong>Methods: </strong>Case series and clinical guidelines are provided for the airway management of patients with campomelic dysplasia.</p><p><strong>Results: </strong>Average age of individuals is 19.4 years. Mean follow-up was 12.2 years. Four individuals underwent open airway reconstruction and achieved decannulation. One patient underwent airway reconstruction with improvement of a complete subglottic stenosis but remains ventilator dependent due to severe scoliosis. The remaining 2 patients did not require additional airway reconstruction, have been liberated from ventilator support, and are under evaluation for tracheostomy tube decannulation.</p><p><strong>Conclusion: </strong>Although campomelic dysplasia was historically considered a lethal form of congenital skeletal dysplasia, with many patients succumbing to respiratory failure due to tracheobronchomalacia in the neonatal period, airway reconstruction and long-term survivorship is feasible in children with campomelic dysplasia and significant airway disease.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"1042-1047"},"PeriodicalIF":1.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cong-Kai Lin, Yi-Ping Chen, Yuan-Hung Wang, Seth H Dailey, Ying-Ta Lai
{"title":"Photoangiolysis with the 445-nm Blue Laser and the Potassium-Titanyl-Phosphate Laser: A Comparison.","authors":"Cong-Kai Lin, Yi-Ping Chen, Yuan-Hung Wang, Seth H Dailey, Ying-Ta Lai","doi":"10.1177/00034894241273280","DOIUrl":"10.1177/00034894241273280","url":null,"abstract":"<p><strong>Objectives: </strong>Photoangiolytic lasers have yielded significant innovation in laryngeal surgery in the last 25 years. After the discontinuation of the potassium titanyl phosphate (KTP) laser, a novel 445-nm blue laser was developed. The optimal balance between a laser's desired tissue effects and collateral tissue damage is a major determinant of laser selection in microlaryngeal surgery. The shell-less incubation system for the chick chorioallantoic membrane (CAM) simulates the microvasculature of the human vocal fold and is useful for testing effects of laser settings and in simulated surgery. The aim of this study is to compare the tissue effects of the KTP and blue lasers using the shell-less CAM model.</p><p><strong>Methods: </strong>The shell-less incubation system contains: polymethylpentene film (used as a culture vessel), calcium lactate and distilled water supplementations. By using this system, the chick chorioallantoic membrane (CAM) can be fully exposed with a good field for surgery simulation. The effects of the 2 lasers (532 nm KTP and 445 nm blue) were quantified at clinically relevant energy settings and laser distances from target. Measures included imaging real-time vascular reactions in the CAM model, post-procedure histologic analysis of CAM tissue and temperature changes.</p><p><strong>Results: </strong>Vessel coagulation and rupture rates were less common with the blue laser compared with the KTP laser. Histologic analysis demonstrated less tissue disruption with the blue laser. Temperature changes were less with the blue laser.</p><p><strong>Conclusion: </strong>In this CAM model with specific conditions, the blue laser reveals less tissue damage than the KTP laser. Suitable working distance and power setting of the laser are necessary for desired tissue effects.<b>Level of Evidence:</b> Level 3.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"921-927"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141983854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mackenzie L Montero, Roshan M Panda, Victoria J Palacios, Roberto N Solis, Jessica R Levi
{"title":"Systematic Literature Review of the Presentation and Management of Pediatric Relapsing Polychondritis.","authors":"Mackenzie L Montero, Roshan M Panda, Victoria J Palacios, Roberto N Solis, Jessica R Levi","doi":"10.1177/00034894241275474","DOIUrl":"10.1177/00034894241275474","url":null,"abstract":"<p><strong>Introduction: </strong>Pediatric Relapsing Polychondritis (RP) is a rare autoimmune disorder that causes inflammation and damage to cartilage in children. Common symptoms include pain, swelling and deformities in the ears, nose, trachea, joints, and eyes. The lack of research on the pediatric population necessitates further evaluation of the literature on pediatric RP to summarize existing patterns in presentation, management, and treatment.</p><p><strong>Methods: </strong>A systematic review was conducted on PubMed and Embase from 1947 to April 2023 on RP in patients under 21 years old abiding by the 2020 PRISMA checklist. Only patient presentations meeting McAdam criteria for RP and including information on management were included.</p><p><strong>Results: </strong>From the 304 initial studies, 54 studies were included for final analysis with a total of 68 patients, who were predominantly female (65%). With a median diagnostic delay of 1 year, the mean age of onset was 12 years old. The most common symptoms on presentation included bilateral auricular chondritis (69%), nasal cartilage inflammation (62%), and respiratory tract chondritis (63%). The most commonly reported information in the literature for the initial workup usually included CT/MRI (72%), bronchoscopy (57%), biopsy (51%), and labs (88%), which most commonly displayed elevated ESR (59%). The most common medications were corticosteroids (91%) and methotrexate (35%) and the most common procedural treatment was tracheostomy (38%). The most efficacious treatment options were monoclonal antibodies (87%, n = 15) and corticosteroids (66%, n = 62) used in 22% and 91% of patients, respectively. The most commonly used monoclonal antibody therapy was infliximab (13%, n = 9).</p><p><strong>Conclusion: </strong>The most common presentation for pediatric RP includes chondritis of the ear, nose, and respiratory tract. The most effective treatment options include corticosteroids and monoclonal antibody therapy, such as infliximab. Our findings highlight increasing remission achieved with anti-rheumatic drugs and monoclonal antibody treatment, especially alongside corticosteroids.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"933-939"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142005782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lumei Liu, Ada C Sher, Carmen Arsuaga-Zorrilla, Humra Shamim, Sarah Nyirjesy, Kimberly M Shontz, Zakarie Hussein, Sarah Sussman, Amy Manning, Tendy Chiang
{"title":"Establishing Benchmarks for Airway Replacement: Long-Term Outcomes of Tracheal Autografts in a Large Animal Model.","authors":"Lumei Liu, Ada C Sher, Carmen Arsuaga-Zorrilla, Humra Shamim, Sarah Nyirjesy, Kimberly M Shontz, Zakarie Hussein, Sarah Sussman, Amy Manning, Tendy Chiang","doi":"10.1177/00034894241282582","DOIUrl":"10.1177/00034894241282582","url":null,"abstract":"<p><strong>Objective: </strong>Airway replacement is a challenging surgical intervention and remains an unmet clinical need. Due to the risk of airway stenosis, anastomotic separation, poor vascularization, and necrosis, it is necessary to establish the gold-standard outcomes of tracheal replacement. In this study, we use a large animal autograft model to assess long-term outcomes following tracheal replacement.</p><p><strong>Methods: </strong>Four New Zealand White rabbits underwent tracheal autograft surgery and were observed for 6 months. Clinical and radiographic surveillance were recorded, and grafts were analyzed histologically and radiographically at endpoint.</p><p><strong>Results: </strong>All animals survived to the endpoint with minimal respiratory symptoms and normal growth rates. No complications were observed. Computed tomography scans of the post-surgical airway demonstrated graft patency at all time points. Histological sections showed no sign of stenosis or necrosis with preservation of the native structure of the trachea.</p><p><strong>Conclusion: </strong>We established benchmarks for airway replacement. Our findings suggest that a rabbit model of tracheal autograft with direct reimplantation is feasible and does not result in graft stenosis or airway collapse.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"967-974"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142331873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Raymond F Lamore, Hannah Kafisheh, Lauren E Mangan
{"title":"Pneumococcal Vaccination Rates and Associated Meningitis Events in Patients With Acute Cerebrospinal Fluid Leak.","authors":"Raymond F Lamore, Hannah Kafisheh, Lauren E Mangan","doi":"10.1177/00034894241273159","DOIUrl":"10.1177/00034894241273159","url":null,"abstract":"<p><strong>Objective: </strong>To characterize the institutional utilization of pneumococcal vaccination during an index hospital admission for acute cerebrospinal fluid (CSF) leakage and associated infectious and clinical outcomes.</p><p><strong>Methods: </strong>This retrospective cohort study included patients hospitalized and treated for an acute CSF leak from January 2017 to June 2022. The primary outcome evaluated the incidence of pneumococcal vaccination during the index admission in patients without prior vaccination. Secondary outcomes evaluated the incidence of meningitis, time from CSF leak identification to meningitis, and mortality within 1 year of the index admission.</p><p><strong>Results: </strong>A total of 94 patients were included. Nineteen (20.2%) patients received pneumococcal vaccination prior to admission. Of the 75 patients without prior vaccination, 4 (5.3%) patients received vaccination during the admission. Meningitis occurred in 5/94 (5.3%) patients and occurred 4-24 days from CSF leak identification. Mortality was observed in 9/94 (9.6%) patients. None of the meningitis cases were attributed to culture-positive findings of pneumococcal disease.</p><p><strong>Conclusions: </strong>The results of this study demonstrate an overall low institutional utilization of pneumococcal vaccination in patients with an acute CSF leak. Infectious and clinical outcomes reflected comparable to previous reported literature. Further evaluation into the risk-benefit relationship of vaccination omission is warranted in this patient population.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"975-978"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141996883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Role of Continuous Positive Airway Pressure in Acute Bilateral Vocal Cord Paresis or Paralysis Post-Thyroidectomy.","authors":"Yaerin Song, Taylor G Lackey, Milan R Amin","doi":"10.1177/00034894241284167","DOIUrl":"10.1177/00034894241284167","url":null,"abstract":"<p><strong>Objectives: </strong>Acute post-thyroidectomy bilateral vocal cord paresis or paralysis (BVCP) is often managed with observation, botulinum toxin injection or tracheostomy. However, only a few cases discuss obstructive sleep apnea (OSA) in the context of BVCP with limited exploration of home sleep test (HST) and continuous positive airway pressure (CPAP) as post-operative assessment and management tools. This study suggests CPAP as a less invasive approach while awaiting vocal cord recovery.</p><p><strong>Methods: </strong>A retrospective chart review was conducted on 2 female patients who presented with dyspnea and sleep-disordered breathing (SDB) symptoms post-thyroidectomy. Both patients underwent laryngoscopy and HSTs, followed by CPAP prescription.</p><p><strong>Results: </strong>Case 1 (body mass index [BMI]: 32.6 kg/m<sup>2</sup>) and Case 2 (BMI: 20.1 kg/m<sup>2</sup>), aged 66 and 77 respectively, presented with post-surgery dyspnea and SDB symptoms. Laryngoscopy revealed left vocal cord paresis and right vocal cord paralysis in both cases. Although tracheostomy could provide definitive treatment, both cases were deferred for non-invasive options, which led to HST, confirming moderate OSA (PAT-derived apnea-hypopnea index (pAHI): 18/hour and 27.1/hour) leading to CPAP recommendation. In Case 2, 5 weeks of CPAP use resulted in dramatic improvements in her sleep quality, with continued benefits at 3-month follow-up.</p><p><strong>Conclusion: </strong>These cases underscore the value of considering sleep studies and CPAP as adjunctive tools in acute post-thyroidectomy BVCP management while awaiting vocal motion recovery. This report also further supports that BVCP sufficiently narrows the glottic airway, predisposing patients to OSA.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"984-986"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142362402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ari D Schuman, Alyssa C Chapel, Jennifer Yan, Irfan Ali, Elton M Lambert, Julina Ongkasuwan
{"title":"Stimulated Vocal Fold Immobility After Vagal Nerve Stimulator Placement: A Case Series.","authors":"Ari D Schuman, Alyssa C Chapel, Jennifer Yan, Irfan Ali, Elton M Lambert, Julina Ongkasuwan","doi":"10.1177/00034894241266802","DOIUrl":"10.1177/00034894241266802","url":null,"abstract":"<p><strong>Introduction: </strong>Vagal nerve stimulator (VNS) implantation is a vital therapy for epilepsy refractory to other treatments; however, it is associated with a very high rate of voice changes. Relatively few of these patients are evaluated for vocal fold motion impairments. In this series, we evaluate 5 such patients with a novel phenotype of forced abduction with VNS stimulation.</p><p><strong>Methods: </strong>Retrospective case series.</p><p><strong>Results: </strong>Five patients with a VNS implant who underwent operative direct or in-office rigid laryngoscopy and had vocal fold motion impairment associated with VNS activation are included. All 5 patients had vocal fold mobility with VNS off and a fixed with activation. All patients exhibited vocal fold abduction with VNS activation. Patient 2 has since undergone laryngeal reinnervation, which helped her intermittent dysphonia but left a small glottic gap. A type 1 thyroplasty corrected this gap and improved her voice further. Patient 3 has undergone laryngeal reinnervation for which early results show improvement in perceptual and patient reported outcomes. Patients 4 and 5 have both undergone laryngeal reinnervation with improvement in voice.</p><p><strong>Conclusion: </strong>Previous reported cases of stimulated immobility associated with VNS use describe only adduction of the vocal fold. This series expands the previous work showing the VNS activation can also cause stimulated immobility in an abducted position, for which reinnervation and other medialization procedures offer promising treatment.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"928-932"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141983855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ryan Witcher, Sugosh M Anur, Dylan Thibaut, Luciano Venturino, Jordon G Grube
{"title":"HLA and Nasal Polyposis Susceptibility: A Meta-analysis of Worldwide Studies.","authors":"Ryan Witcher, Sugosh M Anur, Dylan Thibaut, Luciano Venturino, Jordon G Grube","doi":"10.1177/00034894241275476","DOIUrl":"10.1177/00034894241275476","url":null,"abstract":"<p><strong>Objectives: </strong>Nasal polyposis (NP) is a common and recurrent condition of the sinonasal cavity which has significant impact on patients' quality of life. NP pathophysiology involves a complex interplay of genetic, environmental, and immunological factors. Several studies have explored the association between human leukocyte antigen (HLA) class II alleles and NP, but the results have been conflicting. The aim of this meta-analysis is to investigate the association between HLA class II alleles, specifically HLA-DQA1, HLA-DQB1, and HLA-DRB1and NP risk.</p><p><strong>Methods: </strong>A systematic review was conducted using electronic databases, including PubMed, Google Scholar, and Cochrane Library, to identify studies investigating the association between HLA class II alleles and NP. Eligible studies were identified by specific inclusion and exclusion criteria. The odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the association between HLA class II alleles and NP risk. A random-effects model was used to calculate the pooled OR and corresponding 95% CI, and a study required a heterogeneity assessment value <i>I</i><sup>2</sup> < 25% to be considered for analysis.</p><p><strong>Study design: </strong>Meta-analysis.</p><p><strong>Results: </strong>A total of four studies were included in this meta-analysis, involving a total of 258 NP alleles and 802 control alleles. The analysis indicated that DQA1*0201 (OR = 3.08, 95% CI [1.70, 5.59]) and DRB1*7 (OR = 2.04, 95% CI [1.14, 3.66]) were significantly associated with increased risk of NP. The analysis of the NP risk alleles DQA1*0201 and DRB1*7 had an I<sup>2</sup> < 0% representing low heterogeneity. Sensitivity analysis with LFK indices showed minor asymmetry in either allele.</p><p><strong>Conclusions: </strong>This meta-analysis provides evidence that the HLA-DQA1*0201 and HLA-DRB1*7 alleles are risk factors for the development of NP. These findings could contribute to a better understanding of the genetic predisposition of NP and may have implications for the development of novel approaches for the prevention and treatment of this condition.</p>","PeriodicalId":50975,"journal":{"name":"Annals of Otology Rhinology and Laryngology","volume":" ","pages":"940-946"},"PeriodicalIF":1.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}