Multiple skull base defects in the setting of spontaneous cerebrospinal fluid rhinorrhea; a dual institution view.

PURPOSE: Idiopathic intracranial hypertension (IIH) is a condition of high cerebrospinal fluid (CSF) pressure that presents with CSF leak. The implications of multiple skull base defects (SBD) and associated synchronous CSF leaks have not been previously explored. MATERIALS AND METHODS: A dual institutional case-control study examined multiple SBD's and encephaloceles on the risk of CSF leak and postoperative failures post-repair. IIH patients with CSF leaks and IIH controls without leaks were selected retrospectively. Chi square analysis evaluated for statistically significant alterations in probability with CSF leak development. RESULTS: 192 patients were selected with 108 IIH controls and 84 spontaneous CSF leak cases. Signs and symptoms for IIH controls and CSF leak cases respectively were pulsatile tinnitus (60.2 % and 29.8 %), headaches (96.3 % and 63.1 %), papilledema (74.1 % and 12.5 %), visual field defects (60.8 % and 13 %) (p < 0.001). Encephalocele formation in controls was 3.7 % compared to cases at 91.6 % (p < 0.001). Multiple SBD's in controls compared cases was 0.9 % and 46.4 % respectively (p < 0.001). Subgroup analysis of CSF leak cases showed 15 patients with two CSF leak repairs due to a recurrence. 27 (39.1 %) single leak cases had multiple SDB's while 12 (80 %) recurrent leaks had multiple SDB's (p = 0.004). CONCLUSIONS: Patients with radiographic evidence of multiple SBD's and encephaloceles represent a high-risk population with a propensity for CSF leaks. Secondary SBD's are common in patients with spontaneous CSF rhinorrhea and higher in patients with a recurrence.

Association of HPV status with survival after surgical salvage of oropharyngeal cancers.

OBJECTIVES: This study used the National Cancer Database to determine the effect of human papillomavirus (HPV) on survival outcomes for recurrent oropharyngeal cancer treated with salvage surgery after initial treatment with radiation therapy or chemoradiation therapy. METHODS: Patients with recurrent oropharyngeal cancer receiving salvage surgery after initial treatment with adjuvant therapy were identified through the National Cancer Database. Demographics, tumor characteristics, and survival data were collected. The data were analyzed to identify factors that may be associated with survival. RESULTS: A total of 169 patients were included, 59% of which were HPV-positive cases and 41% were HPV-negative. On univariate analysis, HPV-positive cases had higher overall survival compared to HPV-negative cases. However, on multivariate analysis, the association with HPV status was no longer statistically significant while positive surgical margins, higher T-stage at initial diagnosis, and a greater comorbidity burden were significantly associated with poorer survival. CONCLUSION: In the salvage setting for treatment of recurrent oropharyngeal squamous cell carcinoma, HPV status may not be associated with improved survival.

Effect of histopathological grade on treatment and survival in base of tongue adenocarcinoma.

OBJECTIVES: The purpose of this study was to investigate survival differences between low-grade and high-grade base of tongue (BOT) adenocarcinoma by examining demographics, tumor characteristics, and treatment modalities. METHODS: The National Cancer Database was queried for patients with BOT adenocarcinoma between 2004 and 2017. Univariate and multivariate analyses were performed for all cases of BOT adenocarcinoma. Subsequent analysis focused on low-grade (grade 1 and grade 2) and high-grade (grade 3 and grade 4) BOT adenocarcinoma. RESULTS: A total of 286 patients with BOT adenocarcinoma were included in the main cohort and divided into low grade (n = 137) and high grade (n = 66). The 5-year overall survival for all patients, low-grade, and high-grade was 67%, 85%, and 58%, respectively. Prognostic factors associated with decreased survival for the main cohort include advanced age (hazard ratio [HR]: 1.04; 95% confidence interval [CI]: 1.02-1.06), non-white race (HR: 1.79; 95% CI: 1.04-3.25), public insurance (HR: 1.79; 95% CI: 1.02-3.14) and high-grade 3,4 (HR: 2.63; 95% CI: 1.51-4.56). The prognostic factor associated with increased survival for the main cohort was surgery (HR: 0.59; 95% CI: 0.36-0.96). Radiotherapy was associated with improved overall survival for high-grade BOT adenocarcinoma (HR: 0.09; 95% CI: 0.02-0.49) but not for low-grade BOT adenocarcinoma (HR: 0.93; 95% CI: 0.38-2.32). CONCLUSIONS: This investigation is the largest to date analyzing the association of treatment modalities with overall survival in BOT adenocarcinoma. Surgery remains standard of treatment, particularly in low-grade cases, with radiotherapy offering additional survival benefit for high-grade BOT adenocarcinoma.

Cytopathologic assessment of gloves and instruments after major head and neck surgery.

PURPOSE: To investigate the potential for cancer cells to be transferred between anatomic sites via instruments and other materials. MATERIALS AND METHODS: Pilot prospective study from April 2018-January 2019 at Rush University Medical Center. Glove and instrument washings were collected from 18 high-risk head and neck cancer resection cases (36 samples total). Each case maintained at least one of the following features in addition to a diagnosis of squamous cell carcinoma or sarcoma: palliative/salvage surgery, positive margins, extensive tumor burden, and/or extra capsular extension (ECE). Surgical gloves and four main instruments were placed through washings for blind cytological assessment (2 samples/case). RESULTS: 18 patients undergoing surgical tumor resection for biopsy-proven squamous cell carcinoma with at least one of the aforementioned characteristics were included. 26.7% of cases had ECE, 40.0% had positive final margins and 46.7% had close final margins. Tumor locations included: oral cavity (10), neck (4), parotid gland (2), and skin (2). Malignant cells were isolated on glove washings in 1 case (5.5%). No malignant cells were isolated from instrument washings. The single case of malignant cells on glove washings occurred in a recurrent, invasive squamous cell carcinoma of the scalp with intracranial extension. Anucleated squamous cells likely from surgeon skin were isolated from 94.4% of washings. Squamous cells were differentiated from mature cells by the absence of nuclei. CONCLUSIONS: Malignant squamous cells can be isolated from surgical glove washings, supporting the practice of changing of gloves after gross tumor resection during major head and neck cancer resections.

Temporal patterns of nasal symptoms in patients with mild severity SARS-CoV-2 infection.

BACKGROUND: No study to date has analyzed the progression of sinonasal symptoms over time in COVID-19 patients. The purpose of this study is to analyze the progression of sinonasal symptoms and risk factors for olfactory dysfunction in the mild severity COVID-19 patient. METHODS: An internet survey was used to assess sinonasal symptoms in patients with COVID-19. Changes in rhinologic domain and symptom-specific Sinonasal Outcome Test (SNOT-22) scores were compared at five time points: two weeks before diagnosis, at diagnosis, two weeks after diagnosis, four weeks after diagnosis, and six months after diagnosis. RESULTS: 521 responses were collected. Rhinologic domain SNOT-22 scores increased significantly (p < 0.001) to 8.94 at the time of diagnosis, remained elevated two weeks post-diagnosis (5.14, p = 0.004), and decreased significantly four weeks post-diagnosis (3.14, p = 0.004). Smell-specific SNOT-22 scores peaked at the time of diagnosis (2.05, p < 0.001), remained elevated two weeks after diagnosis (1.19, p < 0.001), and returned to baseline four weeks post-diagnosis (0.64, p > 0.999). Taste-specific SNOT-22 scores also peaked at diagnosis (2.06, p < 0.001), remained elevated two weeks after diagnosis (1.19, p < 0.001), and returned to baseline four weeks after diagnosis (0.71, p > 0.999). There were no significant differences in sense of smell or taste between 1-month and 6-month timepoints. CONCLUSION: Sinonasal symptoms, particularly loss of smell and taste, may be important presenting symptoms in the mild severity COVID-19 patient. Our findings support incorporating these symptoms into screening protocols. LEVEL OF EVIDENCE: 4.

Prior smoking and nasoseptal flap usage adversely impact quality of life and healing after endoscopic pituitary surgery.

OBJECTIVE: Endoscopic pituitary surgery (EPS) via the endonasal transsphenoidal approach is well established as an effective treatment modality for sellar masses. The objective of this study was to determine the relationship between key patient and operative variables and rhinological outcomes as determined by the 22-item Sino-Nasal Outcome Test (SNOT-22) and endoscopic scores following EPS. METHODS: Prospectively collected SNOT-22 scores and objective endoscopic data were analyzed from a cohort of 109 patients who underwent EPS and had at least 90 days of postoperative follow-up. Trends in postoperative SNOT-22 scores were analyzed using linear mixed-effects models. Time to return to baseline endoscopic score was analyzed using Cox regression. RESULTS: After adjusting for age and sex, the authors found that prior smokers had higher total and rhinological subdomain SNOT-22 scores (p < 0.01, 95% CI 5.82-16.39; p = 0.01, 95% CI 1.38-5.09, respectively) following EPS. Nasoseptal flap use also showed higher total and rhinological subdomain SNOT-22 scores (p = 0.01, 95% CI 1.62-12.60; p = 0.02, 95% CI 0.42-4.30, respectively). Prior sinonasal surgery and concurrent septoplasty did not affect the change in SNOT-22 total scores over time (p = 0.08, 95% CI -0.40 to 0.02; p = 0.33, 95% CI -0.09 to 0.29). CONCLUSIONS: The findings suggest that the evolution of healing and patient-reported quality of life (QOL) measures are multifaceted with contributions from two key variables. Nasoseptal flap usage and prior smoking status may adversely impact postoperative QOL. No variables were found to be associated with objective postoperative endoscopic findings.

Assessment of post-operative healing following endoscopic, transnasal, transsphenoidal pituitary surgery without formal sellar grafting.

INTRODUCTION: Multiple options exist for sellar reconstruction after endoscopic transnasal, transsphenoidal surgery (TSS) including free mucosa, fat, bone and synthetic materials. The objective of this study was to assess healing and mucosalization of the sellar face following TSS without formal sellar grafting or reconstruction. METHODS: Single institution retrospective chart review was conducted for patients undergoing TSS without intraoperative CSF leaks between January 2014 and March 2017 at Rush University Medical Center. No formal sellar reconstruction was performed for the entire patient group. Follow-up endoscopic data and clinical notes were coded for time to mucosalization of the sella as well as degree of abnormal mucosal healing, epistaxis, crusting and scarring. RESULTS: 83 patients were included in this study. Mean time to mucosalization was 119 days (range, 17 to 402 days). Incidence of abnormal mucosal healing, epistaxis, crusting and scarring increased from the first to the second postoperative visit but trended down by the third visit. Nasal crusting was the most common finding, followed by abnormal mucosal healing. Chi square analysis showed smoking to be associated with prolonged time to full mucosalization of the sella. Two patients (2.4%) had post-operative CSF leaks requiring lumbar drain placement. CONCLUSION: Adequate sellar healing is achievable in all cases without formal grafting or reconstruction after TSS. Great care must be exercised given the small inherent risk of unmasking a subclinical intraoperative CSF leak. Patients should be followed closely endoscopically during the first four months after TSS to minimize the impact of crusting.

Rapid implementation of COVID-19 tracheostomy simulation training to increase surgeon safety and confidence.

OBJECTIVE: To determine if rapid implementation of simulation training for anticipated COVID-19 tracheostomy procedures can increase physician confidence regarding procedure competency and use of enhanced personal protective equipment (PPE). METHODS: A brief simulation training exercise was designed in conjunction with the development of a COVID-19 Tracheostomy Protocol. The simulation training focused primarily on provider safety, pre and post-surgical steps and the proper use of enhanced PPE. Simulation training was performed in the simulation lab at the institution over 2 days. Pre and post self-evaluations were measured using standardized clinical competency questionnaires on a 5-point Likert Scale ranging from "No knowledge, unable to perform" up to "Highly knowledgeable and confident, independent." RESULTS: Physicians self-reported a significant increase in knowledge and competency immediately after completing the training exercise. Resident physicians increased from a mean score of 3.00 to 4.67, p-value 0.0041, mean increase 1.67 (CI 95% 0.81 to 2.52). Attending physicians increased from a mean score of 2.89 to 4.67, p-value 0.0002, mean increase 1.78 (CI 95% 1.14 to 2.42). Overall, all participants increased from a mean score of 3.06 to 4.71, p-value 0.0001, mean increase 1.65 (CI 95% 1.24 to 2.05). DISCUSSION: Implementation of this simulation training at our institution resulted in a significant increase in physician confidence regarding the safe performance of tracheostomy surgery in COVID-19 patients. IMPLICATIONS FOR PRACTICE: Adoption of standardized COVID-19 tracheostomy simulation training at centers treating COVID-19 patients may result in improved physician safety and enhanced confidence in anticipation of performing these procedures in real-life scenarios.

Prognostic factors and survival outcomes for head and neck cutaneous adnexal cancers.

OBJECTIVES: Malignant cutaneous adnexal tumors (MCAT) are rare and comprise a heterogeneous group of cancers. There have been several studies reviewing prognostic factors of these tumors, but no studies focusing on the head and neck. This study aimed to review a large population based database to evaluate prognostic factors that could impact survival. METHODS: The Surveillance, Epidemiology, and End Results (SEER) database was utilized to identify patients with MCAT of the head and neck. Both overall and disease specific survival were the main outcome measures for the study. Univariate and multivariate analyses were performed to evaluate the association of suspected prognostic factors with survival. RESULTS: The five-year OS and DSS were 72.6 and 95.5%, respectively. A favorable factor for OS was surgical resection ([HR] 0.324; P = 0.001), while unfavorable factors for OS include older age (1.051; P < 0.001), higher tumor grade (1.254; P = 0.049), larger tumor size (1.293; P = 0.003), and positive nodal involvement (3.323; P = 0.002). A favorable factor for DSS was surgical resection (0.026; P < 0.001). Unfavorable factors for DSS include older age (1.058; P = 0.046), larger tumor size (2.528; 1.565-4.085; P < 0.001), and positive nodal involvement (4.761; P = 0.022). CONCLUSION: Review of the SEER database shows good 5-year OS and DSS rates, similar to those cited in other studies. We identified several prognostic factors associated with survival, while histologic sub-type does not seem to be associated with survival. Surgical resection is the mainstay of treatment.

Clinicopathological features of papillary thyroid microcarcinoma with a diameter less than or equal to 5 mm.

PURPOSE: This retrospective study was conducted to assess the epidemiological, clinical and histologic characteristics of incidentally identified and presurgically diagnosed papillary thyroid microcarcinomas less than or equal to 5 mm in size (small PTMC). MATERIALS AND METHODS: Cases from October 2003 to February 2018 were retrieved from pathology databases, and their clinicopathological features were reviewed. RESULTS: There were a total of 182 cases of small PTMCs, 141 women and 41 men. The mean age at diagnosis was 53.5. Most of the small PTMCs were not detected on clinical examination and workup and were diagnosed incidentally during pathologic examination. 21.4% of small PTMCs showed multifocality, with 21 cases of unilateral multifocal lesions and 18 cases with bilateral multifocal tumors. Small PTMCs were most often follicular variant (51.9%) followed by classic type (47.5%). The average size of follicular variants appeared to be larger than that of the classic type PTMCs (2.84 ±â€¯1.43 mm vs 2.26 ±â€¯1.51 mm, P = 0.01). A total of 66 cases (36.3%) had regional lymph node sampling or selective neck dissection and 15 of these cases identified lymph node metastasis (22.7%). 46.7% of patients with node positive microcarcinomas were male compared with 16% male in group with negative lymph nodes (P = 0.03). CONCLUSIONS: Small PTMCs (≤5 mm) are often multifocal and bilateral and histology is commonly both the classical and follicular variant of PTC. While often diagnosed incidentally small PTMC can lead to regional lymph node involvement in a significant portion of cases and evaluation of the regional lymph nodes should be considered in the clinical management of these patients.

Clinical features and outcomes in young adults with oral tongue cancer.

OBJECTIVE: To evaluate outcomes and survival in young patients with oral tongue cancer (OTC). METHODS: Retrospective chart review of patients aged 18-40 with OTC treated between 2000 and 2016. Tumor characteristics of p16 expression, perineural invasion (PNI), and lymph-vascular invasion (LVI) were evaluated. Recurrence-free (RFS) and overall survival (OS) data were analyzed according to Kaplan-Meier method with univariate analysis. RESULTS: A total of 23 patients were identified: 12 with early stage disease (ESD, stage I), and 11 with advanced stage disease (ASD, stage III or IV), (17 men and 6 women). Mean age at presentation was 34.5 years (±5 months) and mean follow-up was 46.6 months. For all patients, 5-year RFS was 62% and OS 66%. RFS for ESD was 73% and ASD 25% (log rank p = 0.011). OS for ESD was 100% and ASD 55% (log rank p = 0.012). 22% indicated tobacco use >5 pack-years and 9% heavy alcohol use. Factors associated with worse OS were neck disease (log rank p = 0.073), positive margins (log rank p = 0.001), and LVI (log rank p = 0.002). Factors associated with worse RFS were chemotherapy or radiation therapy prior to surgery (log rank p = 0.002), neck disease (log rank p = 0.047), positive margins (log rank p = 0.039), and PNI (log rank p = 0.001). Expression of p16 was observed in five cases and was not significantly associated with OS or RFS. CONCLUSION: In young patients with OTC, factors associated with worse outcomes are similar to known predictors in older patients. Expression of p16 was not statistically associated with improved OS. OS in patients with ESD was excellent (100%), and significantly worse for ASD.

Dynamic optical contrast imaging as a novel modality for rapidly distinguishing head and neck squamous cell carcinoma from surrounding normal tissue.

BACKGROUND: Head and neck squamous cell carcinomas (HNSCCs) are debilitating diseases for which a patient's prognosis depends heavily on complete tumor resection. Currently, the surgeon's fingers determine the location of tissue margins. This study evaluated the diagnostic utility of a novel imaging modality, dynamic optical contrast imaging (DOCI), in the detection of HNSCC. This system generates contrast by illuminating the tissue with pulsed light and detecting variations in endogenous fluorophore lifetimes. METHODS: A total of 47 fresh ex vivo samples from 15 patients were imaged with the DOCI system immediately after surgical resection. DOCI maps were analyzed to determine the statistical significance of contrast between tumors and adjacent nonmalignant tissue. Pilot intraoperative clinical data were also acquired. RESULTS: Statistical significance (P < .05) between muscle and tumor was established for 10 of 10 emission wavelengths, between collagen and tumor for 8 of 10 emission wavelengths, and between fat and tumor for 2 of 10 wavelengths. The system extracted relative fluorescence decay information in a surgically relevant field of view in <2 minutes. CONCLUSIONS: This study demonstrates the feasibility of using DOCI to rapidly and accurately distinguish HNSCC from surrounding normal tissue. An analysis of DOCI images revealed microscopic characterization sufficient for tissue-type identification consistent with histology. Such an intraoperative tool would be transformative by allowing the rapid delineation of tumor tissue from nontumor tissue and thus maximizing the efficacy of resection and improving patient outcomes. Cancer 2017;123:879-86. © 2016 American Cancer Society.

Understanding Biofilms in Chronic Sinusitis.

Chronic sinusitis is a burdensome disease that has substantial individual and societal impact. Although great advances in medical and surgical therapies have been made, some patients continue to have recalcitrant infections. Microbial biofilms have been implicated as a cause of recalcitrant chronic sinusitis, and recent studies have tried to better understand the pathogenesis of chronic sinusitis as it relates to microbial biofilms. Here, we provide an overview of biofilms in chronic sinusitis with emphasis on pathogenesis, treatment, and future directions. In addition, recent evidence is presented, elucidating the role of bitter taste receptors as a possible key factor leading to biofilm formation.

Role of Rhinopharyngoscopy in Diagnosis of Rhinopathies.

Rhinopathies, or diseases of the sinonasal cavity, are a heterogeneous group of disorders ranging from benign entities to malignant processes. Proper evaluation and treatment of rhinopathies are dependent on accurate visualization and characterization of the disease processes. Prior methods of evaluation of the sinonasal cavity were dependent largely on anterior rhinoscopy, which unfortunately provides poor visualization of the superior, posterior, and lateral extent of the sinonasal cavity. With the advent of high-definition flexible and rigid endoscopes, rhinopharyngoscopy has proven to be a critical component in the evaluation of the sinonasal cavity. Here, we discuss rhinopharyngoscopy with emphasis on technique and evaluation of common rhinopathies and future developments.

Head and neck sarcomas: the UCLA experience.

PURPOSE: To profile the clinical presentation, subtype distribution, and treatment results of sarcomas of the head and neck at a single tertiary academic center over an 11-year period. MATERIALS AND METHODS: A retrospective review was performed by examining the records and reviewing the pathology of 186 patients with head and neck sarcomas treated at UCLA Medical Center from 2000 to 2011. RESULTS: The mean age of the study population was 49 ± 22 years. 58% of the patients were male and 42% were female. Median duration of follow-up for the entire group was 18.5 months. The most common presenting symptom was a mass lesion in 59.9% of patients. The nasal cavity/sinus was the most common presenting site seen in 22% of patients. Solitary fibrous tumor/hemangiopericytoma was the most common subtype. 15% of patients had evidence of prior radiation exposure. 26.3% of tumors were greater than 5 cm and 35.5% were high-grade. Margins were positive in 31.2% of patients. Lymph node metastasis was rare at 6.5%. Perineural invasion was identified in 6.5%. Among all subtypes, 5-year recurrence-free survival and overall survival were 50% and 49%, respectively. Multivariate analysis demonstrated that grade and margin status were predictors of recurrence-free survival while grade and age affected overall survival. CONCLUSIONS: Head and neck sarcomas are a rare entity frequently presenting as a mass lesion. In our series, lesions tended to be high-grade with a significant portion of surgical specimens having positive margins. Grade and margin status were the most important predictors of survival.

Medical School Characteristics Associated with Matched Otolaryngology Residency Applicants.

OBJECTIVE: Identify which medical schools produce the most otolaryngology residents, and associated characteristics which may contribute to this productivity. DESIGN: The medical school and residency program of each otolaryngology-matched student was identified. Various characteristics for each medical school and residency were compared in univariate and multivariate analysis after adjusting for class size. Percentage of matched students relative to class size was identified and compared for each geographic region. SETTING: Cross-sectional study of publicly available match data from otomatch.com and otolaryngology residency program websites from 2020-2023. PARTICIPANTS: 1411 students from 174 medical schools matched into 126 otolaryngology residencies were identified. RESULTS: Private medical schools (ß = 0.50, p = 0.03), larger otolaryngology departments (ß = 0.01, p = 0.04), and higher U.S. News and World Report (USNWR) ranking (ß = -0.01, p = 0.02) was associated with a greater percentage of otolaryngology-matched students while schools in the Mountain region were associated with a lower percentage of matched students (ß = -1.08, p = 0.02). A difference in percentage of matched students was observed when comparing across all regions (p < 0.01) but no significant differences were observed between any individual regions. The East North Central Region and the Middle Atlantic regions were more likely to match students from their respective regions compared to the Mountain region (OR: 4.98, 95% CI: 1.18, 21.01; OR: 8.20, 95% CI: 1.92, 34.99, respectively). Additionally, the Mountain region was less likely to match students from their own region compared to the Pacific (OR: 0.21, 95% CI: 0.05, 0.90), South Atlantic (OR: 0.20, 95% CI: 0.05, 0.85), and West South Central (OR: 0.15, 95% CI: 0.03, 0.67) regions. CONCLUSIONS: Medical school characteristics such as private vs public status, size of otolaryngology department, higher USNWR ranking, and geographic region impact the number of otolaryngology-matched students. Applicants should consider the impact of their geographic region when allocating signals during the residency application process.

Computed Tomography Imaging Patterns of Sinonasal Inverted Papillomas: Comparison of Primary and Recurrent Disease.

OBJECTIVE: To analyze clinical and radiographic features that may impact the rate of focal hyperostosis (FH) on computed tomography (CT) for primary and recurrent sinonasal inverted papillomas (IPs) as well as highlight factors that may affect concordance between FH and IP true attachment point (TAP). METHODS: All IPs resected between 2006 and 2022 were retrospectively reviewed. CTs were read by a neuroradiologist blinded to operative details. IP with malignancy was excluded. Operative reports and long-term follow-up data were evaluated. RESULTS: Of 92 IPs, 60.1% had FH, 25% had no CT bony changes, and 20.7% were revision cases. The recurrence rate for rhinologists was 10.5% overall and 7.3% for primary IPs. Primary and revision IPs had a similar rate of FH (63% vs. 52.6%; p = 0.646) and FH-TAP agreement (71.7% vs. 90%; p = 0.664). Nasal cavity IPs, especially with septal attachment, were more likely to lack bony changes on CT (57.1%) compared to other subsites (p = 0.018). Recurrent tumors were 16 mm larger on average (55 mm vs. 39 mm; p = 0.008). FH (75.0% vs. 60.9%; p = 0.295), FH-TAP concordance (91.7% vs. 74.4%; p = 0.094), and secondary IP (18.8% vs. 20.3%; p = 0.889) rates were similar between recurrent and nonrecurrent tumors. CONCLUSION: Primary and revision IPs have a similar rate of FH and FH-TAP agreement. Nasal cavity IPs are less likely to exhibit bony CT changes. Lower recurrence was associated with smaller size and fellowship training but not multiple TAPs, revision, FH absence, or FH-TAP discordance. LEVEL OF EVIDENCE: 3 Laryngoscope, 134:1591-1596, 2024.

Comparative Performance of ChatGPT 3.5 and GPT4 on Rhinology Standardized Board Examination Questions.

Objective: Advances in deep learning and artificial intelligence (AI) have led to the emergence of large language models (LLM) like ChatGPT from OpenAI. The study aimed to evaluate the performance of ChatGPT 3.5 and GPT4 on Otolaryngology (Rhinology) Standardized Board Examination questions in comparison to Otolaryngology residents. Methods: This study selected all 127 rhinology standardized questions from www.boardvitals.com, a commonly used study tool by otolaryngology residents preparing for board exams. Ninety-three text-based questions were administered to ChatGPT 3.5 and GPT4, and their answers were compared with the average results of the question bank (used primarily by otolaryngology residents). Thirty-four image-based questions were provided to GPT4 and underwent the same analysis. Based on the findings of an earlier study, a pass-fail cutoff was set at the 10th percentile. Results: On text-based questions, ChatGPT 3.5 answered correctly 45.2% of the time (8th percentile) (P = .0001), while GPT4 achieved 86.0% (66th percentile) (P = .001). GPT4 answered image-based questions correctly 64.7% of the time. Projections suggest that ChatGPT 3.5 might not pass the American Board of Otolaryngology Written Question Exam (ABOto WQE), whereas GPT4 stands a strong chance of passing. Discussion: The older LLM, ChatGPT 3.5, is unlikely to pass the ABOto WQE. However, the advanced GPT4 model exhibits a much higher likelihood of success. This rapid progression in AI indicates its potential future role in otolaryngology education. Implications for Practice: As AI technology rapidly advances, it may be that AI-assisted medical education, diagnosis, and treatment planning become commonplace in the medical and surgical landscape. Level of Evidence: Level 5.