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Παρασκευή 10 Φεβρουαρίου 2023

Endoscopic Multiport Approach for Exenteration of the Infratemporal Fossa

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Endoscopic Multiport Approach for Exenteration of the Infratemporal Fossa

New minimally endoscopic multiport approach to infratemporal fossa. Step-by-step cadaveric dissection.


Objective

To demonstrate anatomic relationships pertinent to the endoscopic multiport approach to the infratemporal fossa (ITF). Discuss advantages and limitations of each individual approach.

Study Design

Cadaveric study.

Methods

Endoscopic and endoscopic-assisted endonasal transpterygoid, sublabial transmaxillary, endoscopic transorbital, and endoscopic transoral approaches to accessing the ITF were completed in five silicone-injected fresh cadaveric specimens (10 sides) with the assistance of 0, 30, and 450 rods-lens endoscopes. Image guidance was used to confirm and document the anatomical relationships encountered in each approach.

Results

The endonasal endoscopic transpterygoid approach provides better visualization and more direct exposure to median structures. Endoscopic-assisted sublabial transmaxillary approach enhances the field of exposure, angle of attack, and ease of instrumentation to the lateral part of the ITF. Endoscopic-assisted transorbital approach via the inferior orbital fissure provided cephalic and anterior access. Endoscopic-assisted transoral approach complements the access to lesions extending inferior to the hard palate or far lateral to the mandibular condyle.

Conclusions

A combination of minimal access infratemporal approaches can provide adequate exposure of the entire ITF while avoiding some of the morbidity associated with open approaches.

Level of Evidence

NA Laryngoscope, 2023

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Immunogenicity of novel DNA vaccines encoding receptor‐binding domain (RBD) dimer‐Fc fusing antigens derived from different SARS‐CoV‐2 variants of concern

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Abstract

The continuously emerging of SARS-CoV-2 variants of concern (VOCs) led to a decline in effectiveness of the first-generation vaccines. Therefore, optimized vaccines and vaccination strategies, which show advantages in protecting against VOCs, are urgently needed. Here we constructed an optimized DNA vaccine plasmid containing built-in CpG adjuvant, and designed vaccine candidates encoding five forms of antigens derived from Wuhan-Hu-1. The results showed that plasmid with RBD dimer-Fc fusing antigen (2RBD-Fc) induced the highest level of RBD-specific IgG and neutralizing antibodies in mice. Then 2dRBD-Fc and 2omRBD-Fc vaccines, respectively derived from delta and omicron VOCs, were constructed. The 2dRBD-Fc induced potent humoral and cellular immune responses, while the immunogenicity of 2omRBD-Fc was low. We also observed that sequential immunization with 2RBD-Fc, 2dRBD-Fc and 2omRBD-Fc effectively elicited neutralizing antibodies against each immunized strain, and RBD-specific T cell responses. To be noted, the Wuhan-Hu-1, delta and omicron neutralizing antibody titers induced by sequential immunization were comparable to that induced by repetitive immunization with 2RBD-Fc, 2dRBD-Fc or 2omRBD-Fc respectively. The results suggest that sequential immunization with DNA vaccines encoding potent antigens derived from different VOCs, may be a promising strategy to elicit immune responses against multiple variants.

This article is protected by copyright. All rights reserved.

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The assessment of the long-term prognosis of burning mouth syndrome following treatment necessitates a reappraisal

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Despite the importance of studies evaluating the long-term prognosis of burning mouth syndrome (BMS), there is a paucity of reliable literature available on this subject. We read with interest a recently published article by Kim et al.,1 titled "Long-term prognosis of burning mouth syndrome following treatment", which concluded that the long-term prognosis of BMS was good in patients who responded well to treatment, and that xerostomia and taste disturbance were associated with a relapse of oral discomfort in some of the responders. (Source: International Journal of Oral and Maxillofacial Surgery)
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Two-centre experience in the treatment of thyroglossal duct remnants using the modified muscle-sparing Sistrunk technique

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The Sistrunk procedure has long been the method of choice for treating patients with thyroglossal duct remnants (TDRs). However, the extent of the surgical resection in the suprahyoid segment of the TDR remains controversial, as this anatomical site is the origin of both disease recurrence and surgical morbidity. The aim of this two-centre retrospective cohort study was to investigate the outcomes of a modified muscle-sparing Sistrunk procedure in primary TDRs. The primary predictor was the surgical approach, and the outcome variable was the recurrence rate. (Source: International Journal of Oral and Maxillofacial Surgery)
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Prevalence of ocular candidiasis and Candida endophthalmitis in patients with candidemia: A systematic review and meta-analysis

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Abstract
Background
Infectious diseases and ophthalmology professional societies have disagreed regarding ocular screening in patients with candidemia. This study aimed to summarize the current evidence on the prevalence of ocular candidiasis (OC) and Candida endophthalmitis (CE) according to the standardized definitions.
Methods
A literature search was conducted from the 1990s through October 16th, 2022, using PubMed, Emb ase, and SCOPUS. Pooled prevalence of ocular complications was derived from generalized linear mixed models. (PROSPERO CRD42022326610)
Results
A total of 70 and 35 studies were included in the meta-analysis for OC and concordant CE (chorioretinitis with vitreous involvement), respectively. This study represented 8,599 patients with candidemia who underwent ophthalmologic examination. The pooled prevalence [95% confidence interval] of OC, overall CE, concordant CE, and discordant CE were 10.7% [8.4%-13.5%], 3.1% [2.1%-4.5%], 1.8% [1.3%-2.6%], and 7.4% [4.5%-12%] of patients screened, respectively. Studies from Asian countries had significantly higher concordant CE prevalence of patients screened [95% CI] of 3.6% [2.9% - 4.6%] compared to studies from European countries of 1.4% [0.4% - 5%] and American countries of 1.4% [0.9% - 2.2%], p-value <0.01. Presence of total parenteral nutrition and C. albicans were associated with CE with p ooled odds ratios [95% CI] of 6.92 [3.58–13.36] and 3.02 [1.67–5.46], respectively.
Conclusion
Prevalence of concordant CE overall and among Asian countries was two-times and four-times higher than the prevalence previously reported by American Academy of Ophthalmology of < 0.9%, respectively. There is an urgent need to study optimal screening protocols and to establish joint recommendations by the Infectious Diseases and Ophthalmology Societies.
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The Long Outer-Hair-Cell RC Time Constant: A Feature, Not a Bug, of the Mammalian Cochlea

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AbstractThe cochlea of the mammalian inner ear includes an active, hydromechanical amplifier thought to arise via the piezoelectric action of the outer hair cells (OHCs). A classic problem of cochlear biophysics is that theRC (resistance-capacitance) time constant of the hair-cell membrane appears inconveniently long, producing an effective cut-off frequency much lower than that of most audible sounds. The longRC time constant implies that the OHC receptor potential —and hence its electromotile response—decreases by roughly two orders of magnitude over the frequency range of mammalian hearing, casting doubt on the hypothesized role of cycle-by-cycle OHC-based amplification in mammalian hearing. Here, we review published data and basic physics to show that t he "RC problem " has bee...
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Association of Primary Tumor Volume With Survival in Patients With T3 Glottic Cancer Treated With Radiotherapy

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This cohort study examines the association of primary tum or volume with oncologic outcomes in patients with T3 N0-N3 M0 glottic cancer treated with primary (chemo)radiotherapy.
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Therapeutic Cancer Vaccines for Recurrent and Metastatic Head and Neck Cancer

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This review provides an overview of the clinical efficacy of various treatment modalities currently available for treatment of recurrent and metastatic head and neck squamous cell carcinoma.
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Decisional Conflict in Patients With Head and Neck Cancer

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This cohort study examines assess decisional conflict amo ng patients with head and neck squamous cell carcinoma, the association between decisional conflict and quality of life, and the degree of control patients experience in the decision-making process.
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Risk Factors for Hearing Loss at Birth in Newborns With Congenital Cytomegalovirus Infection

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This cross-sectional study assesses the risk factors for hearing loss at birth in newborns with congenital cytomegalovirus.
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Analysis of Unmet Information Needs Among Patients With Thyroid Cancer

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This survey study uses mixed-methods analysis to assess p retreatment counseling experiences of survivors of thyroid cancer and to identify their unmet information needs.
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