Khalil, Yousuf H.

Background: Facial appearance influences social perception, with laypersons focusing on the central facial triangle; nasal differences may alter gaze patterns, but few studies have quantified this using eye-tracking. Objective: To evaluate how layperson gaze patterns shift in response to different nasal variations as measured by eye-tracking. Methods: In this prospective cohort study, facial images with 30 nasal differences were created using Photoshop to represent a range of phenotypes, such as dorsal hump, crooked nose, and pinched tip, alongside controls. Gaze data were captured via eye-tracking, and linear mixed-effects modeling assessed differences in time spent viewing defined areas of interest, adjusting for participant and image variables. Results: A total of 119 participants (53.8% female) were enrolled. The median age was 40 years, and 82% identified as Caucasian. Among the 30 nasal alterations, only the saddle nose resulted in significantly increased gaze time compared to controls (mean increase: 0.89 s; p < 0.001). Participant age, sex, and gender of the face in the image did not significantly influence gaze behavior. Conclusion: In this study, only the saddle nose attracted greater visual attention from lay observers compared with other nasal variants.

ABSTRACT Background Idiopathic subglottic stenosis (iSGS) occasionally affects women of childbearing age. Surgical intervention is the primary treatment, yet limited research exists on factors influencing disease severity. This study explores the impact of hormonal contraception on iSGS recurrence rates and surgery‐free intervals. Methods This retrospective study was conducted at a tertiary academic care center. Patients using hormonal birth control (e.g., estrogen‐progesterone pills, progesterone implants) during their first procedure were classified in “Birth Control (BC)” group, while those not using contraceptives were placed in “No Birth Control (NBC)” group. Poisson regression evaluated recurrence rates, and Mann–Whitney tests assessed surgery‐free intervals. Kaplan–Meier analysis estimated time to first recurrence, adjusting for age and follow‐up duration. Results Twenty‐six patients were in the NBC group and 12 in the BC group (average ages 37 and 34, respectively). Patients in the NBC group were 2.6 times more likely to experience recurrence compared to those in the BC group ( p = 0.001). The expected number of recurrences for the BC group was 0.4 times that of the NBC group (95% CI: 0.2–0.7; p = 0.001). Furthermore, patients taking birth control were significantly less likely to have a first recurrence (HR: 0.4; 95% CI: 0.2–0.9; p = 0.025) and had longer times to first recurrence (Figure 1; p = 0.031). Conclusions Birth control appears to protect against iSGS severity, potentially through hormonal mechanisms. Hormonal contraception may serve as a non‐surgical alternative for managing iSGS. Future prospective studies may evaluate outcomes in newly diagnosed iSGS patients started on birth control compared to those not using hormonal contraceptives. Level of Evidence 3.

ABSTRACT Background Managing idiopathic subglottic stenosis (iSGS) during pregnancy presents distinct clinical challenges. As pregnancy is a naturally dyspneic state, the development of iSGS may exacerbate respiratory symptoms and compromise the airway—potentially impacting pregnancy and delivery decisions. This study characterizes surgical management strategies and outcomes in pregnant patients with symptomatic iSGS. Methods We conducted the largest known multi‐institutional retrospective review of pregnant patients who underwent endoscopic intervention for iSGS. Demographics, procedural details, anesthesia and medication use, and maternal and neonatal outcomes were analyzed. Results Twelve patients underwent 15 endoscopic procedures during pregnancy: 9 laser wedge excisions (8 CO 2 laser and 1 coblator) and 6 balloon dilations. Three additional procedures in different patients occurred postpartum (2–11 months after delivery). Higher‐risk pregnancies included two twin gestations, one patient with multiple surgeries during two different pregnancies, and two patients over age 35. Most interventions (87%) occurred in the second trimester. Fetal monitoring was performed preoperatively and postoperatively. Fentanyl and propofol were used in 88% and 94% of cases, respectively; rocuronium was the most common neuromuscular blocker (70%). One patient underwent balloon dilation via flexible bronchoscopy without anesthesia. Jet ventilation was used in 53% of cases, and Size C Kleinsasser laryngoscopes in 47%. Median procedure times were 75, 19, and 18 min for laser wedge excision, balloon dilation, and coblation, respectively. Most patients delivered full‐term with no surgical or postpartum complications. Conclusions Endoscopic intervention for iSGS during pregnancy appears safe and effective, even in high‐risk cases. These findings support individualized airway management and inform future practice. Level of Evidence 4.

ABSTRACTObjectiveThere is currently not a marker of disease severity in idiopathic subglottic stenosis (iSGS). Our objective was to characterize iSGS patients' disease severity using endoscopic surgery rates.MethodsThis was a two‐center retrospective analysis of iSGS patients with a minimum of 4 years of follow up following an initial endoscopic procedure (laser wedge excision (LWE) or endoscopic dilation (ED)). Disease severity was classified into Groups A–C, based on whether patients had fewer (Group A), the same number (Group B), or more surgeries (Group C) in years 3–5 compared to years 1 and 2. Disease severity proportions were compared across institutions using chi‐square analysis. Nonparametric testing compared clinical characteristics such as age, BMI, and GERD across severity groups.ResultsThere were 104 patients from institution 1 and 53 patients from institution 2 that were all female and predominantly Caucasian. Both institutions had clinically and statistically similar proportions of patients in Group A (64% vs. 62%), Group B (20% vs. 19%), and Group C (16% vs. 19%) disease (p > 0.05). No clinical characteristic (e.g., age, sex, race, BMI, GERD) was associated with disease severity.ConclusionAcross tertiary care institutions there is a consistent proportion of iSGS patients who either demonstrate nonrecurrent/decelerating (Group A), stable but persistent (Group B), or rapidly recurring disease (Group C). Two‐year surgery rates appear to be an important timepoint for providing expectations to patients on the likelihood of possessing severe disease.Level of Evidence4

ABSTRACTObjectiveWhile endoscopic laser wedge excision (LWE) for iSGS demonstrated lower surgical recurrence rates compared to endoscopic dilation (ED), ED remains the primary technique employed. Additionally, serial intralesional steroid injections (SILSIs) also demonstrate benefits in controlling disease. We aimed to compare surgical recurrence rates following ED, ED + SILSI, and LWE following a patient's first operation.MethodsThis was a two‐center retrospective analysis of iSGS patients who underwent either ED, ED + SILSI, or LWE. Patients were followed to their last follow‐up date or reoperation. Kaplan–Meier analysis and Cox proportional hazards were used to evaluate the recurrence times across the different surgical groups with additional stratification by age, compliance to medical adjuvant therapy, and percentage of stenosis rated at reoperation.ResultsA total of 126 patients from Institution 1 underwent LWE, while at Institution 2, ED and ED + SILSI were performed on 32 and 23 patients, respectively. One‐year recurrence estimates were 9%, 53%, and 0% for LWE, ED, and ED + SILSI, respectively, while 5‐year recurrence estimates were 45%, 90%, and 19%, respectively. Adjusted Cox‐proportional hazard ratios demonstrated a greater risk of surgical recurrence with ED compared to LWE (2.25; 95% confidence interval [CI]: 1.31–3.88) and no difference between ED + SILSI and LWE (0.84; 95% CI: 0.32–2.25).ConclusionLWE demonstrates reduced recurrence times compared to ED when controlling for surgery number, age, triple therapy compliance, and percentage of stenosis at reoperation. The application of postoperative SILSI appears to similarly reduce recurrence rates comparable to LWE and warrants further investigation.

AbstractObjectiveThis study aims to evaluate the impact of parity on the severity and recurrence rates of idiopathic subglottic stenosis (iSGS) in premenopausal females.Study DesignA retrospective cohort study.SettingTwo tertiary care centers from 2002 to 2024.MethodsWe analyzed premenopausal iSGS patients under 40 years who underwent balloon dilation or laser wedge excision. Clinical features, including demographics and pregnancy history, were examined. Recurrence rates between nulliparous and parous patients were compared using Poisson regression, adjusting for age and follow‐up duration. Linear regression assessed the relationship between pregnancy and iSGS recurrence.ResultsForty‐eight patients were included, with 36 parous and 12 nulliparous. Adjusting for age and follow‐up, the mean recurrence rate was 2.6 times higher in parous patients (95% confidence interval [CI]: [1.5, 4.8], P = .0008). Each additional pregnancy was associated with 0.81 additional recurrences (95% CI: [0.05, 1.57], P = .0375). No significant differences in surgery‐free time were observed between groups.ConclusionParity and pregnancy significantly increase the risk of iSGS recurrence, although they do not accelerate subsequent recurrences. Health care providers should counsel women of childbearing age about these risks in family planning discussions, emphasizing shared decision‐making regarding potential surgical interventions.Level of evidence3.

Introduction Although osteosarcoma represents the most common primary malignant bone tumor in children, they comprise only 0.2% of all cancers. Osteosarcoma frequently involves long bones; however, 8% of osteosarcomas involve the skull or mandible. Osteosarcoma is generally categorized based on location within the bone (central, surface, or extraskeletal) and histological grade (high-grade or low-grade). Osteoblastic osteosarcoma is a central, high-grade subtype and may be difficult to diagnose; it may present similarly to osteoblastoma, another rare, but benign, type of osteoblastic bone tumor. In this report, we present a rare case of osteoblastic osteosarcoma involving the temporal-occipital skull. Study design Case report and systematic review. Setting Tertiary referral center. Results A 21-year-old male presented for assessment of a mass appearing over his left mastoid region, first noticed within the previous 12 months. He experienced growth of the lesion and pain that increased when pressure was applied to the mass. Results from fine needle aspiration and CT-guided core biopsy were positive for osteosarcoma, osteoblastic-type. Magnetic resonance imaging of the brain and skull base revealed the mass to be 2.8 cm in maximal diameter. Given a somewhat favorable location, the tumor could be completely excised en bloc with negative margins, and the patient subsequently received adjuvant chemotherapy. The patient is doing well at last follow-up 10 months after surgery, with no evidence of recurrence to date. Conclusion The temporal bone is an uncommon location for a primary osteosarcoma, and there are numerous conditions that could present in a similar manner. This case highlights this rare occurrence of osteoblastic osteosarcoma of the temporal bone without previous exposure to radiation. There are a limited number of similar cases in the literature, and our report serves to bring awareness to this potential diagnosis and considerations related to treatment.

ObjectiveTo evaluate the impact of age on disease recurrence in idiopathic subglottic stenosis (iSGS) patients.MethodsThis was a retrospective chart review of iSGS patients treated with laser wedge excision. Patients did not have prior surgery. Survival rates free of recurrence were estimated using the Kaplan–Meier methods, and associations were evaluated using Cox Proportional Hazards models.ResultsEighty‐five female patients were included in the study. Most patients (68%) were postmenopausal, had first period at or before 13 years of age, had at least one full‐term pregnancy (82%), were not undergoing hormone replacement therapy (93%), were not using hormonal birth control (88%), and were either partially or completely compliant with triple therapy regime (80%). There was a statistically significant average reduction in risk of recurrence of 5% for every additional year of age (p < 0.0001). When compared to patients older than 65 years of age, patients less than 35 were nearly 10 times more likely to recur (p = 0.002), and patients 55–65 and 45–55 years of age were 8 and 5 times more likely to recur, respectively (p = 0.003 and 0.009). Additionally, females on birth control showed decreased risk of recurrence of 74% compared with their counterparts (p = 0.04).ConclusionThis is the first study to demonstrate an inverse relationship between age and disease recurrence in patients with iSGS following surgery. Using age as a surrogate for menopausal status, these results suggest that increased age and/or birth control provide a protective effect through decreased recurrence rates, possibly mediated by decreased estrogen levels.Level of Evidence4 Laryngoscope, 2024

ObjectiveTo evaluate the impact of methotrexate and rituximab therapy on highly recurrent idiopathic subglottic stenosis (iSGS) patients with a negative antineutrophil cytoplasmic antibody titer cANCA(−).MethodsThis was a retrospective cohort study of highly recurrent iSGS patients who recurred within 1 year or less and were treated with methotrexate (MTX), and rituximab (RTX), or a combination of both at different time points (MTX/RTX). Average surgical durations before and after drug treatment were summarized, and the differences were calculated.ResultsA total of 21 female patients with median age of 62 years were included. Fifteen patients were treated with MTX, three were treated with RTX, and five treated with both. Patients treated with immunosuppressants showed a trend toward longer intervals between operations (mean pre‐drug interval: 338; mean post‐drug interval: 697 days) (p‐value = 0.25). Three patients did not recur following drug initiation with median follow‐up of 1265 days. All three treatment groups demonstrated a trend toward increased post‐drug recurrence intervals (MTX: 444 days, RTX: 374 days, MTX/RTX: 55 days), that was not statistically significant. Patients with prior dilations demonstrated longer post‐drug recurrence intervals (mean pre‐drug interval: 341 days, mean post‐drug interval 978 days) (p‐value = 0.17). Four patients in the cohort with the highest recurring disease improved from mean 129 days between operations to 509 days with drug therapy. The most common drug side effect was nausea (16%).ConclusionMTX and RTX may be treatment options for some highly recurrent iSGS patients. Initial results are variable and demonstrate a need for further research on drug candidacy.Level of Evidence3 Laryngoscope, 2024