Neck Surgery Research Articles

History of Balkan Association of Otorhinolaryngology, Head and Neck Surgery

History of Balkan Association of Otorhinolaryngology, Head and Neck Surgery

Delay in the Diagnosis of Patients With Head and Neck Cancer: Impact of Different Patient- and Healthcare Provider-Related Factors.

Background In our setup, head and neck cancer (HNC) is the most common, and patients frequently present at an advanced stage, which results in dismal outcomes. Delays on the part of the patient (such as resistance to seeking treatment) or the provider (such as misdiagnosis or an extended wait period for consultation) may be the cause of a late presentation. The presentation stage may vary depending on several factors, including age, gender, smoking status, job status, and education. Objectives The study aims to identify factors that lead to advanced-stage presentations of HNCs and to determine the delays brought on by patient- or healthcare provider-related factors and how these factors affect HNC disease staging among biopsy-proven HNC patients. Materials and methods Participants in the study were those who initially presented with a biopsy-verified HNC at the cancer clinic of the department of otolaryngology-head and neck surgery atPakistan Institute of Medical Sciences (PIMS), Islamabad. Patients answered questions on their first symptom presentation, past healthcare professional visits, and intervals between visits on a Cancer Symptom Interval Measure (C-SIM) questionnaire. For every patient, clinical and demographic information was gathered. TNM staging was completed. The test of significance was applied where applicable. Results Age, gender, education level, and smoking status had no bearing on the presentation stage. Patients without jobs present at a statistically significant higher stage (p = 0.038). The most prevalent histological form of HNC was squamous cell carcinoma 79 (82.29%), with theoral cavity and larynx being the most common sites of the disease30 (31.25%) and 29 (30.21%) respectively. Patients took an average of 5.28 ± 9.12 months from the onset of symptoms to their first appointment with a healthcare provider. Prior to diagnosis, the majority of patients saw three or more healthcare providers (range: 1-8). The duration from the initial visit to a healthcare provider to the initiation of treatment was 3.06 ± 5.88 months. Based on the stage at presentation, there were no discernible variations in the times to presentation (p>0.05). Conclusion Significant delays and high stage of presentation are caused by unemployment. The majority of the delay was caused by the patient's tardiness in seeing a medical practitioner, yet the presentation stage was not greatly impacted by this delay.

Cleft lip and palate surgery in the Otolaryngology and Head-neck surgery department of a Medical College Hospital in Bangladesh

Background: Cleft lip and palate (CLP) are one of the most common developmental anomalies in orofacial region. CLP surgery lies in the anatomical domain of Ear Nose Throat and Head - Neck Surgery. In Bangladesh specialty of plastic surgery is still in developing stage and plastic surgeons are not easily available everywhere. ENT and Head-Neck surgeon had to take up the responsibility of some of cleft patients. This article is a retrospective analysis of a series of 200 cases of cheiloplasty and palatoplasty done in ENT and Head-Neck Surgery department of Khulna City Medical College Hospital, Bangladesh. Results were satisfactory in our, patient and parent's consideration. Objective: Our aim is to discuss the demographic profile, presentations, degree & type of cleft and outcome of CLP surgery in Otolaryngology and Head-Neck Surgery department of a Medical College Hospital of Bangladesh. We will also discuss the embryology of face & historical background of the cleft surgery. Materials and Methods: This is a retrospective analysis of CLP surgery for 200 cleft patients. We based on inclusion and exclusion criteria for selection of patients. Majority of cleft lip patients were operated following the Millard modified rotation advancement technique and isolated cleft palate patients were operated following Von Langenbeck bipedicle flap and Veau-Wardil-Kilner V-Y pushback technique in the ENT and Head-Neck Surgery Department of a Medical College Hospital. Patients were advised for periodic follow up. Results: Total of 200 patients of CLP were operated in our department out of which male was 92 (46%) and female was108 (54%)), male and female ratio being 1:1.08. The age range was 3 months to 40 years with a mean of 8.38 years. Pre alveolar group both male and female comprised of 134 (67%) and alveolar group 66 (33%) patients and that of isolated cleft palate 7 (10.60%) patients. Pre alveolar unilateral CLP was high. The results of surgery were satisfactory in our postoperative evaluation. Patients and parents were also satisfied with the outcome. Conclusion: Majority of CLP patients don’t suffer functional problem apart from facial disfigurement. Restoration of normal anatomy, facial appearance and function can be achieved by surgery in appropriate time and age. Few cases may be associated with feeding difficulties, dental and hearing problems. Some cases are associated with other congenital anomalies and syndromes. Those cases demand team approach of different specialty.

Teaching Application of 3D-printed Models for Nasal Analysis.

A major challenge in learning rhinoplasty is correlating patients' external and internal nasal structures. We aim to explore the application of three dimensional (3D)-printed models of nasal bony-cartilaginous structures in identifying accurate nasal anatomy. Otolaryngology-head and neck surgery and plastic and reconstructive surgery residents matched patient photograph models, described relative nasal bony-cartilaginous anatomy, completed pre- and postactivity self-evaluations (based on otolaryngology "nasal deformity" milestones including "anatomy," "function," "aesthetic," and "etiology"), and rated the 3D-printed models' usefulness. Descriptive statistics were measured. Thirty-seven residents correctly matched four of six model-photograph pairs and correctly described 15 of 30 anatomic relationships, on average. There was a moderate, statistically significant correlation between postgraduate year and number of correctly matched model-photograph pairs (Spearman rho = 0.58, 95% CI 0.24-0.79) and total items correct (Spearman rho = 0.61, 95% CI 0.28-0.81). Self-ratings on milestones decreased postexercise in all subcategories except "function." From 0 (low) to 100 (high), learners found the exercise useful (median 85 of 100) with a high recommendation for future use (median 87 of 100). Three-dimensional printed models are a valuable tool for understanding nasal anatomy. Continued standardization of designs and assessments of their educational utility will enhance their broader dissemination and implementation.

Member List of the Second Editorial Board of World Journal of Otorhinolaryngology‐Head and Neck Surgery

Member List of the Second Editorial Board of World Journal of Otorhinolaryngology‐Head and Neck Surgery

How to Disclose Internal Carotid Artery Dehiscence in Patients With Eustachian Tube Dysfunction: Cone Beam Computed Tomography or High-resolution Computed Tomography?

Objective: To compare the prevalence of internal carotid artery dehiscence (ICAD) on high-resolution computed tomography (HRCT) and cone beam computed tomography (CBCT) in patients with Eustachian tube dysfunction (ETD). Study Design: A prospective, cohort study. Setting: The outpatient clinic at the Department of Otorhinolaryngology, Head and Neck Surgery at Gødstrup Hospital, Denmark (tertiary referral center). Patients: Patients >18 years of age diagnosed with long-standing ETD undergoing HRCT and/or CBCT prior to balloon Eustachian tuboplasty. Intervention(s): Patients had either initially HRCT and later CBCT performed (HRCT + CBCT group) or solely CBCT (CBCT group). Main Outcome Measure(s): Prevalence of ICAD assessed with HRCT and CBCT. Results: A total of 23 patients were included in the HRCT + CBCT group and 36 patients in the CBCT group. In the HRCT + CBCT group, ICAD was found in 13 temporal bones (28.3%) with HRCT and 7 temporal bones (15.2%) with CBCT (P = 0.0003). No new cases of ICAD were found with CBCT. In the CBCT group, ICAD was found in 6 temporal bones (8.3%). In both HRCT and CBCT, patients suffered from ETD in 61.5% of the ears where ICAD was found. Conclusions: CBCT has a higher specificity than HRCT in diagnosing ICAD in patients with ETD while at the same time using less radiation.

Predicting Complications in Head and Neck Surgery: Comparing Calculators to Surgeons.

Objectives: Surgical outcomes determine national ranking, reputation, and funding, and are often assessed with objective surgical risk calculators (SRCs). Surgeons' assessments are not considered. This study aims to determine if surgeons or SRCs are more accurate in predicting outcomes. Methods: This prospective cohort study identified a surgeon's assessment on a patient's risk preoperatively. The patient's risk was also calculated using the SRC. Predictions were compared to patient outcomes and to each other to assess whether surgeons or the SRC were more accurate. Results: Of the 101 patients included, 37 (36.6%) experienced a complication of any kind and 18 (17.8%) experienced a serious complication. Smoking resulted in a 2.49 times higher overall complication rate (P = .04). Laryngectomy patients experienced the highest rate of complications (P = .02) compared to those undergoing free flap reconstruction [odds ratio (OR) 0.9] or any other surgery (OR 0.26). Both surgeons and the American College of Surgeons (ACS) tool performed poorly on the prediction of the outcome of any complication, with a receiver operating characteristic (ROC) area under the curve (AUC) of 0.51 [95% confidence interval (CI): 0.39-0.62] and 0.58 (95% CI: 0.47-0.70), respectively, which was not statistically significant (P = .34). For the prediction of the outcome of serious complication, the AUC for surgeons and the ACS tool were 0.55 (95% CI: 0.41-0.69) and 0.60 (95% CI: 0.46-0.74), respectively, which was not statistically significant (P = .58). Conclusions: Neither validated risk calculators nor surgeons are accurate in predicting perioperative risk. The only risk factor that contributes to improving predictions for complications is preoperative smoking, although age and type of surgery are also significant predictors. Risk calculators may therefore not be appropriate metrics for assessing hospital performance. These findings can help guide preoperative counseling and may help in the development of more accurate predictive tools as the healthcare field continues to incorporate artificial intelligence into surgical planning.

Gender Differences In Thyroid Cancer In A Tertiary Care Hospital Bangladesh

Background: The gender disparity in incidence, aggressiveness and prognosis is well established for thyroid cancer but the cause of the disparity is poorly understood. Objective: The main objective of the study was to evaluate the gender difference in thyroid disease. Materials and Methods: This cross sectional study was conducted in the Department of Otolaryngology-Head & Neck Surgery of Bangabandhu Sheikh Mujib Medical University, Dhaka from January 2013 to December 2015. The thyroid gland was assessed by palpation in all patients. Estimation of serum TSH concentrations were performed by automated immune chemiluminescent assay. Results: In this study out of 400 thyroid cancer patients, 327 were females and 73 were males. The mean age was almost similar between male and female patients (p=0.245). HOMA-IR was significant higher in female patients than male patients (1.9±0.5 vs 1.7±0.6). FT3, FT4 and TPO antibody were significantly higher in male patients than female patients, whereas TSH level was significantly higher in female patients than male patients (5.7±2.9 vs 4.5±2.8 µIU/mL). In multivariate logistic regression analysis abnormal TSH patient had 3.61 (95% CI 1.66 to 7.81) times more likely to have female. Abnormal FT3 patient had 2.56 (95% CI 1.08 to 6.05) times more likely to have female. Abnormal TSH and FT3 were significantly associated with female patients. Conclusion: Serum TSH and FT3 levels were significantly associated with thyroid cancer especially for females. Our results suggest the necessity of monitoring TSH and FT3 in the population for thyroid cancer risk assessment, especially female.

Comparison of Effectiveness of Conventional Polypectomy with Functional Endoscopic Sinus Surgery

It is common for rhinologists to face nasal polyposis. When other treatments have failed, patients must undergo Functional Endoscopic Sinus Surgery (FESS) with a microdebrider or traditional equipment to clear out their sinuses and restore normal airflow. Objective: To compare the effectiveness of conventional polypectomy with functional endoscopic sinus surgery in patients presenting to tertiary level care hospital in Islamabad, Pakistan. Methods: This study was conducted at Department of ENT Head and Neck Surgery, Pakistan Institute of Medical Sciences, Islamabad from November 2017 to December 2018. Eighty-eight patients were enrolled and they were randomly into group A and group B assigned for conventional polypectomy and functional endoscopic sinus surgery, respectively. Results: There were 27 (61.4%) males and 17 (38.6%) females and mean age was 34.59 ± 12.00 years in conventional polypectomy and 28 (63.6%) males and 16 (36.5%) females and mean age was 36.64 ± 10.76 years in function endoscopic sinus surgery. The recurrence rate after 6 months in patients underwent conventional polypectomy was 18 (40.9%) and functional endoscopic sinus surgery was 2 (4.5%). Conclusion: The frequency of recurrence of nasal polyps after conventional polypectomy was more than in patients receiving functional endoscopic sinus surgery procedure.

Comparative Study of Flexometallic Tube, Ring Adair-Elwyn Tube vs Polyvinyl Chloride Macintosh Endotracheal Tube Using Nasopharyngeal Airway to Facilitate Nasotracheal Intubation in Patients Undergoing Head and Neck Surgeries

Comparative Study of Flexometallic Tube, Ring Adair-Elwyn Tube vs Polyvinyl Chloride Macintosh Endotracheal Tube Using Nasopharyngeal Airway to Facilitate Nasotracheal Intubation in Patients Undergoing Head and Neck Surgeries

The right lymphatic duct: basic anatomy and clinical relevance.

The anatomical variability of the thoracic duct and the right lymphatic duct predisposes them to inadvertent damage following head and neck surgery thereby leading to chyle leak which is an uncommon complication with potentially significant associated morbidity. Although chyle leak is predominately associated with left-sided neck surgery, it also occurs as a complication of the right-sided neck dissection. Variable figures concerning chyle leakage after right-sided neck dissections were reported, ranging from 0 per cent to higher prevalences such as 14%, 24%, 33% and 60% of total cases of chyle leakages associated with neck surgery. The right-sided complications may implicate the right lymphatic duct and right-sided terminations of the thoracic duct into the venous system which occur in about 1-6% of humans. Other clinically relevant conditions involving the right-sided major lymphatic vessels include chyle leaks following right anterior cervical spine surgery, cysts of the right lymphatic duct and dilatation of the right lymphatic duct in the setting of recurrent cervical swelling. This article presents a review of the literature concerning the basic anatomy and the clinical relevance of the right lymphatic duct and the right-sided terminations of the thoracic duct into the venous circulation.

Prediction of hearing recovery with deep learning algorithm in sudden sensorineural hearing loss

This study aimed to establish a deep learning-based predictive model for the prognosis of idiopathic sudden sensorineural hearing loss (SSNHL). Data from 1108 patients with SSNHL between January 2015 and May 2023 were retrospectively analyzed. Patients underwent standardized treatment protocols including high-dose steroid therapy and hearing outcomes were assessed after three months using Siegel’s criteria and the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) classification. For predicting patient recovery, a two-layered classification process was implemented. Initially, a set of 22 Multilayer Perceptrons (MLP) networks was employed to categorize the patients. The outcomes from this initial categorization were subsequently relayed to a second-layer meta-classifier for final prognosis determination. The validity of this methodology was ascertained through a K-fold cross-validation procedure executed with 10 distinct splits. The prediction model for complete recovery, based on Siegel’s criteria, demonstrated an accuracy of 0.892 and area under the curve (AUC) of 0.922. For the class A prediction, according to AAO-HNS classification, the model showed an accuracy of 0.847 and AUC of 0.918. These results suggest that the model may have the potential to contribute to the establishment of tailored patient management strategies by predicting hearing recovery in patients with SSNHL.

Factors of postoperative recurrent laryngeal nerve paralysis and recovery of vocal cord movement in thyroid surgery

ObjectivePostoperative recurrent laryngeal nerve paralysis is one of the complications of thyroid surgery, and the prevention and management of paralysis is an important issue for surgeons. In this study, in order to gain further understanding of recurrent laryngeal nerve paralysis after thyroid surgery, we analyzed and examined the usefulness of nerve stimulators for recurrent laryngeal nerve paralysis and the factors that may cause recurrent laryngeal nerve paralysis. Furthermore, in cases where transient recurrent laryngeal nerve paralysis occurred, we analyzed and examined the timing of improvement in vocal cord movement for each intraoperative finding and intraoperative operation that caused the paralysis. MethodsAt the Department of Otorhinolaryngology Head and Neck Surgery, Sapporo Medical University Hospital, between January 2012 and December 2021, the subjects were 543 thyroid surgery cases (692 nerves) without preoperative paralysis or cancer nerve invasion performed. The relationship between postoperative transient and permanent paralysis of the recurrent laryngeal nerve was evaluated using univariate and multivariate analysis. The factors evaluated were gender, age, BMI, total thyroidectomy, benignity, malignancy, Graves’ disease, using IIONM (intermittent intraoperative nerve monitoring), using CIONM (continuous intraoperative nerve monitoring), malignant tumor T3b or higher, with lateral neck dissection, and years of experience of the surgeon. Furthermore, by targeting 87 nerves with transient paralysis, surgical operations were divided into three groups: minor injury, major injury, and adhesion, and their relationship with the timing of postoperative vocal fold movement improvement was evaluated. ResultsPermanent paralysis of the recurrent laryngeal nerve occurred in 12 nerves (1.7 %), and transient paralysis occurred in 100 nerves (14.5 %). Univariate analysis showed no association with each factor, but multivariate analysis showed that transient paralysis was significantly lower in men and in patients using IIONM. The improvement time for vocal cord paralysis was 2.8 months in the minor injury group, 4.5 months in the major injury group, and 3.2 months in the adhesion group, indicating a statistically significant difference between the minor injury group and the major injury group. ConclusionThis study suggests that the use of IIONM and gentle manipulation of women may prevent recurrent laryngeal nerve paralysis during thyroid surgery. In addition, understanding the period of nerve recovery for each operation for postoperative transient recurrent laryngeal nerve paralysis may contribute to patient explanations and determining the timing of therapeutic intervention for speech improvement surgery.

Effect of Nivolumab on the Quality of Life in Recurrent/Metastatic Head and Neck Cancer.

Nivolumab is expected to further prolong survival and improve the quality of life (QOL) of patients with a poor prognosis of head and neck cancer. However, only a few studies have been conducted regarding the QOL of recurrent or metastatic head and neck cancer patients treated with nivolumab using real-world data. This study aimed to examine the effect of nivolumab on the QOL of these patients using real-world data. This study included patients with recurrent metastatic head and neck cancer who received nivolumab at the Department of Otolaryngology and Head and Neck Surgery, Tokyo Medical University Hospital from May 1, 2017, to December 31, 2021. Among them, 50 patients who self-assessed their QOL were included in this study. The primary endpoint was the QOL evaluation score, and secondary endpoints were overall survival (OS), progression-free survival (PFS), response rate, and immune-related adverse events. OS and PFS were evaluated using the Kaplan-Meier method. No significant reduction in QOL was observed before or after nivolumab administration. The median OS time was 20.1 months, and 1-year OS rate was 76.4%. The median PFS time was 4.2 months, and 1-year PFS rate was 31.0%. The comparison of patient QOL before and after nivolumab use suggested that patient QOL was not compromised. The results were not inferior to those of other studies in terms of treatment efficacy and safety.

Areal differences in the rate of operative care for cancer of the head and neck within one hospital district in Northern Finland

Abstract Aim The relationship between socioeconomic status (SES) and cancers of the head and neck has been described previously. The present study investigated areal differences in the rate of operative care of cancers of the head and neck in terms of SES and rural–urban areas. Methods This retrospective cohort study included operations performed in Northern Finland between 1 January 2014 and 31 December 2019. SES and the rurality of the residence was determined using postal codes. Results Patients from the low-income areas were older and had higher American Society of Anesthesiologists classification than patients from middle- and high-income areas. The number of operated thyroid and parotid gland tumours was higher in the high-income areas (n = 36 [33.0%] vs n = 21 [18.8%] and n = 330 [28.6%], p = 0.049). Patients living in low- or median-income areas were more likely to live in rural areas than patients living in high-income areas (n = 55 [49.1%] and n = 62 [59.0%] vs n = 44 [40.4%], p = 0.024). The age-weighted rate of operations was higher in low-income areas than in high-income areas (29.3 [23.9–29.3] vs 17.9 [14.5–21.2]), and the age-weighted rate of free-flap surgery was highest in the low-income areas (16.8 [12.4–21.2] vs 8.2 [5.7–10.6] and 9.6 [7.0–12.1] /100,000 inhabitants/year). Conclusion There are significant areal differences in the rate of ablative head and neck surgery. Significantly higher rates were found in low-income areas and in rural areas.

Improving readability and comprehension levels of otolaryngology patient education materials using ChatGPT

ObjectiveA publicly available large language learning model platform may help determine current readability levels of otolaryngology patient education materials, as well as translate these materials to the recommended 6th-grade and 8th-grade reading levels. Study designCross-sectional analysis. SettingOnline using large language learning model, ChatGPT. MethodsThe Patient Education pages of the American Laryngological Association (ALA) and American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) websites were accessed. Materials were input into ChatGPT (OpenAI, San Francisco, CA; version 3.5) and Microsoft Word (Microsoft, Redmond, WA; version 16.74). Programs calculated Flesch Reading Ease (FRE) scores, with higher scores indicating easier readability, and Flesch-Kincaid (FK) grade levels, estimating U.S. grade level required to understand text. ChatGPT was prompted to “translate to a 5th-grade reading level” and provide new scores. Scores were compared for statistical differences, as well as differences between ChatGPT and Word gradings. ResultsPatient education materials were reviewed and 37 ALA and 72 AAO-HNS topics were translated. Overall FRE scores and FK grades demonstrated significant improvements following translation of materials, as scored by ChatGPT (p < 0.001). Word also scored significant improvements in FRE and FK following translation by ChatGPT for AAO-HNS materials overall (p < 0.001) but not for individual topics or for subspecialty-specific categories. Compared with Word, ChatGPT significantly exaggerated the change in FRE grades and FK scores (p < 0.001). ConclusionOtolaryngology patient education materials were found to be written at higher reading levels than recommended. Artificial intelligence may prove to be a useful resource to simplify content to make it more accessible to patients.

Smell and taste disorders in childhood: Diagnostic challenges and significant impacts on a child's well-being

AimSmell and taste are senses that contribute to a child's overall well-being. Disorders affecting these senses can impact a child's daily life from enjoying meals to detecting potential dangers through scent.The aim of this study is to describe patient characteristics and etiological causes of olfactory (OD) and/or gustatory disorders (GD) in children referred to a smell and taste clinic. Secondly, we aim to suggest a clinical work up. MethodsRetrospective study where data were collected from 57 children who were referred consecutively to the University Clinic for Flavour, Balance, and Sleep; Department of Otorhinolaryngology (ORL), Head and Neck Surgery; Goedstrup Hospital, Denmark, for assessment due to OD/GD from January 2017 to May 2023. ResultsMost of the children had anosmia (60 %), whereas sensation of the basic tastes was intact in all but eight children (16 %). The lowest TDI scores were in children with congenital OD. The underlying etiology was congenital followed by postinfectious mostly related to Covid-19. Picky eating including anorectic traits were seen in 16 % of patients. ConclusionThe focus on smell loss in pediatric population is low, and probably does not adequately reflect either underlying prevalence in this group or the possible consequences on a child's well-being. Moreover, increased awareness of children's smell and taste loss is needed, as it may be associated with eating disturbances.

The COVID-19 Pandemic and Emergencies in Otolaryngology-Head and Neck Surgery: An Analysis of Patients Presenting to Emergency Rooms in South-West Germany: A Bi-Center Study.

This study was designed to examine the changes in emergency room visits in otolaryngology, head and neck surgery, during the COVID-19 pandemic. The study included 11,277 patients who presented to a tertiary care hospital (ER) and an emergency practice (EP) during on-call hours in the first half of 2018, 2019, and 2020. The epidemiologic parameters, diagnoses, and level of urgency were recorded using a four-step scale. A comparison was made between the pre-pandemic years and 2020. The findings revealed a significant decrease in the frequency of ER visits in the second quarter of 2020 compared to 2019 (ER: 30.8%, EP: 37.8%), mainly due to the fact that there were significantly fewer patients, with low levels of urgency. Certain diagnoses, such as epistaxis (-3.0%) and globus sensation (-3.2%), were made at similar frequencies to 2019, while inflammatory diseases like skin infections (-51.2%), tonsillitis (-55.6%), sinusitis (-59%), and otitis media (-70.4%) showed a significant reduction. The study concludes that patients with a low triage level were less likely to visit the ER during the early stages of the pandemic, but some diagnoses were still observed at comparable rates. This suggests a disparity in perception between patients and ER staff regarding urgency. Many of the issues discussed were also emphasized in the 2024 proposal by the German Ministry of Health to reform emergency care in Germany.

Permanent unilateral visual loss and orbital compartment syndrome following unilateral frontal craniotomy: illustrative case.

Vision loss following supine craniotomy is an unexpected and devastating complication for the patient and the operating team. Postoperative vision loss (POVL) is commonly associated with cardiac, spinal, neck, and prone head surgeries, as they share common risk factors, such as a prone position, intraoperative hypotension, a longer anesthesia duration, and the use of vasopressors. Herein, the authors report a case of irreversible vision loss following a frontal craniotomy in the supine position together with a review of the literature. All published cases in the literature since the first reported case in 1970 are summarized. Possible etiologies and proposed preventive measures are discussed. Different pathologies, such as vascular, intra-axial, and extra-axial lesions, are associated with POVL and have similar clinical courses and nonrecovery rates, which raises the question of whether POVL begins during the exposure part of these surgeries. Preventive measures could include avoiding direct ocular pressure during flap reflection, the use of elastic bands or fishhooks to avoid stretching the orbital contents and impairing venous outflow, and a careful review of the venous drainage of frontal tumors, which could help avoid unnecessary large venous thrombi or waxing. The role of intraoperative visual neurophysiological monitoring in predicting POVL requires further exploration. https://thejns.org/doi/10.3171/CASE2434.

Robot-assisted versus conventional neck dissection: a propensity score matched case-control study on perioperative and oncologic outcomes.

The widespread acceptance of robotic surgery is extending to oral procedures. The demand for minimally invasive techniques is driving research into the cosmetic and oncologic benefits of robotic neck surgery. This study used propensity score matching to analyze the clinical course and postoperative outcomes of robot-assisted neck dissections for oncologic efficacy and surgical safety. Between May 2020 and April 2024, 200 OSCC patients underwent surgery and 42 were excluded. The cohort included 158 patients, 128 of whom underwent unilateral neck dissection and 30 of whom underwent bilateral neck dissection. Robotic-assisted neck dissection (RAND) was performed in 36 patients while conventional transcervical neck dissection (CTND) was performed in 122 patients. Data analysis included several factors, including lymph node retrieval and perioperative outcomes, with 1:1 propensity score matching to ensure fairness. Each of the 39 neck specimens with 36 patients was selected. The CTND group was 8years older overall than the RAND group, but otherwise similar in terms of primary site and clinical stage. The RAND group had a 55-min longer operative time and 140cc more hemovac drainage than the CTND group, but the hospital stay and intensive care unit duration were the same, and the number of lymph nodes retrieved was the same. Survival rates also showed no difference across all stages. This shows that RAND is in no way inferior to CTND in terms of perioperative or oncologic outcomes, and demonstrates the safety of robot-assisted surgery, even in patients who require flaps or in patients with advanced stages.