840,624 results match your criteria: "Head & Neck Surgery University Clinic St. Poelten St. Poelten Austria.[Affiliation]"

Introduction: Laryngeal chondrosarcoma (CS) is a rare indolent malignant tumor. High-grade (G3), dedifferentiated (DD), and myxoid (MY) CSs are considered more aggressive subtypes due to their metastatic potential and relatively poor outcomes. The aim of this systematic review is to evaluate treatment modalities and survival outcomes in patients affected by these rarer CS subtypes.

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Objective: To compare the treatment of osteoradionecrosis (ORN) using a protocol that incorporates antimicrobial photodynamic therapy with a conventional treatment protocol.

Methodology: This retrospective study analyzed 55 patients diagnosed with ORN at a reference hospital between 2002 and 2021. Patients were treated using two different clinical protocols.

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Genetic landscape in undiagnosed patients with syndromic hearing loss revealed by whole exome sequencing and phenotype similarity search.

Hum Genet

January 2025

Division of Hearing and Balance Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, 2-5-1 Higashigaoka, Meguro-Ku, Tokyo, 152-8902, Japan.

There are hundreds of rare syndromic diseases involving hearing loss, many of which are not targeted for clinical genetic testing. We systematically explored the genetic causes of undiagnosed syndromic hearing loss using a combination of whole exome sequencing (WES) and a phenotype similarity search system called PubCaseFinder. Fifty-five families with syndromic hearing loss of unknown cause were analyzed using WES after prescreening of several deafness genes depending on patient clinical features.

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Objective: This study aims to investigate the genetic link between psoriasis and sudden sensorineural hearing loss (SSNHL).

Methods: From a genetic standpoint, this study further highlighted the connection between psoriasis and SSNHL. Single nucleotide polymorphisms (SNPs) connected to SSNHL could be found using a genome-wide association study from the IEU OpenGWAS project website.

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Ciliary muscle traction during accommodation is able to induce optic nerve head deformation.

Eye (Lond)

January 2025

Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, China.

Objectives: To use finite element (FE) modeling and in vivo optical coherence tomography (OCT) imaging to explore the effect of ciliary muscle traction on optic nerve head (ONH) deformation during accommodation.

Methods: We developed a FE model to mimic the ciliary muscle traction during accommodation, and varied the stiffness of the sclera, choroid, Bruch's membrane (BM), prelaminar neural tissue and lamina cribrosa (LC) to assess their effects on accommodation-induced ONH strains. To validate the FE model, OCT images of the right eyes' ONHs from 20 subjects (25 ± 1.

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Aerial images can cover a wide area and capture rich scene information. These images are often taken from a high altitude and contain many small objects. It is difficult to detect small objects accurately because their features are not obvious and are susceptible to background interference.

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Surgical frequency analysis of patients clustered according to postoperative pain trajectory: a retrospective study.

Sci Rep

January 2025

Department of Dental Anesthesiology, School of Dentistry and Dental Research Institute, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.

Oropharyngeal and orthognathic surgeries cause more postoperative pain than simple dental procedures. The lack of detailed pain pattern analysis after dental surgeries makes pain management challenging. We assessed postoperative pain patterns in patients undergoing various dental surgeries, categorized based on changing pain levels, and identified the most frequent surgical procedures within each pain pattern cluster.

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Real-world data on treatment outcomes or the quality of large-scale chronic hepatitis B (CHB) treatment programs in sub-Saharan Africa (SSA) is extremely difficult to obtain. In this study, we aimed to provide data on the prevalence and incidence of mortality, loss to follow-up (LFTU), and their associated factors in patients with CHB in three treatment centres in Eritrea. Additional information includes baseline clinical profiles of CHB patients initiated on nucleos(t)ide analogue (NUCs) along with a comparison of treatment with Tenofovir disoproxil fumarate (TDF) vs.

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Background: Messenger RNA 3' untranslated regions (3'UTRs) control many aspects of gene expression and determine where the transcript will terminate. The polyadenylation signal (PAS) AAUAAA (AATAAA in DNA) is a key regulator of transcript termination and this hexamer, or a similar sequence, is very frequently found within 30 bp of 3'UTR ends. Short interspersed element (SINE) retrotransposons are found throughout genomes in high copy numbers.

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Salient Voice Symptoms in Primary Muscle Tension Dysphonia.

J Voice

January 2025

School of Behavioral and Brain Sciences, Department of Speech, Language, and Hearing, Callier Center for Communication Disorders, University of Texas at Dallas, Richardson, TX; Department of Otolaryngology - Head and Neck Surgery, University of Texas Southwestern Medical Center, Dallas, TX. Electronic address:

Introduction: Patients with primary muscle tension dysphonia (pMTD) commonly report symptoms of vocal effort, fatigue, discomfort, odynophonia, and aberrant vocal quality (eg, vocal strain, hoarseness). However, voice symptoms most salient to pMTD have not been identified. Furthermore, how standard vocal fatigue and vocal tract discomfort indices that capture persistent symptoms-like the Vocal Fatigue Index (VFI) and Vocal Tract Discomfort Scale (VTDS)-relate to acute symptoms experienced at the time of the voice evaluation is unclear.

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Machine Learning-Based Estimation of Hoarseness Severity Using Acoustic Signals Recorded During High-Speed Videoendoscopy.

J Voice

January 2025

Division of Phoniatrics and Pediatric Audiology at the Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany.

Objectives: This study investigates the use of sustained phonations recorded during high-speed videoendoscopy (HSV) for machine learning-based assessment of hoarseness severity (H). The performance of this approach is compared with conventional recordings obtained during voice therapy to evaluate key differences and limitations of HSV-derived acoustic recordings.

Methods: A database of 617 voice recordings with a duration of 250 ms was gathered during HSV examination (HS).

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Amniotic Fluid as a Potential Treatment for Vocal Fold Scar in a Rabbit Model.

J Voice

January 2025

Department of Otolaryngology - Head and Neck Surgery, University of Utah, Salt Lake City, UT; Department of Surgery, University Utah, Salt Lake City, UT.

Objectives/hypothesis: Vocal fold (VF) injury and chronic inflammation can progress to scarring, which is notoriously difficult to treat. Human amniotic fluid (AF) has potential for VF wound healing in a rabbit model, and we hypothesized that AF would demonstrate wound healing properties superior to hyaluronic acid (HA) over time.

Study Design: Randomized, controlled trial.

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Prognostic Value of Response Evaluation Using PSMA PET/CT in Patients with Metastatic Prostate Cancer (RECIP 1.0): A Systematic Review and Meta-analysis.

Acad Radiol

January 2025

University Medical Imaging Toronto, Joint Department of Medical Imaging, University Health Network-Sinai Health System -Women's College Hospital, University of Toronto, Toronto, ON, Canada (S.A.M., P.V.H., U.M., A.B.D.). Electronic address:

Rationale And Objectives: Recently, the Response Evaluation Using PSMA PET/CT in Patients with Metastatic Castration-Resistant Prostate Cancer (RECIP 1.0) was proposed to better evaluate treatment response in prostate cancer patients using PET/CT with prostate-specific membrane antigen (PSMA) than more traditional approaches like metabolic PET evaluation response criteria in solid tumor (PERCIST 1.0).

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Closed Treatment of the Internal Nasal Valve.

Otolaryngol Clin North Am

January 2025

Department of Otolaryngology-Head and Neck Surgery, Louisiana State University Health Sciences Center, New Orleans, LA, USA; Our Lady of the Lake Regional Medical Center, Baton Rouge, LA, USA. Electronic address:

The internal nasal valve, the narrowest portion of the nasal airway, is prone to collapse and is often targeted for improvement in nasal reconstruction and rhinoplasty. Endonasal techniques can reduce surrounding trauma and reduce operative times compared to traditional open methods. Options include the use of spreader, butterfly and alar batten grafts, suspension and flaring sutures, and Z-plasty for scarring.

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Functional and Cosmetic Considerations in Saddle Nose Deformity Repair.

Otolaryngol Clin North Am

January 2025

Department of Otolaryngology-Head and Neck Surgery, University of Miami Miller School of Medicine, 1120 Northwest 14th Street, Floor 5, Miami, FL 33136, USA. Electronic address:

The saddle nose deformity is associated with dorsal collapse and can have both function and cosmetic problems. The saddle nose can cause nasal obstruction by narrowing the nasal cavities, eliciting dynamic internal and external nasal valve narrowing, and abnormally widening the internal and external nasal valves altering airflow dynamics, sinonasal passageways, and olfaction. The saddle nose is challenging to treat due to skin contracture, lack of donor tissue, and difficulties in esthetic integration.

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Evaluation and Treatment of Nasal Valve Compromise in non-Caucasian Rhinoplasty.

Otolaryngol Clin North Am

January 2025

Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology-Head & Neck Surgery, Loma Linda University Health, Loma Linda, CA, USA; Department of Otolaryngology-Head & Neck Surgery, Loma Linda University Health, 11234 Anderson Street, Room 2586A, Loma Linda, CA 92354, USA. Electronic address:

The number of non-Caucasian patients with nasal valve compromise seeking functional rhinoplasty is projected to increase in tandem with an increasingly diverse population in the United States. Gaining a deeper appreciation for the variances in nasal morphology amongst different ethnicities will help rhinoplasty surgeons perform accurate preoperative evaluations, optimize functional and esthetic outcomes, and maintain ethnic congruence with surgery.

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Evaluation and Management of the External Nasal Valve.

Otolaryngol Clin North Am

January 2025

Department of Otolaryngology-Head and Neck Surgery, Division of Facial Plastic and Reconstructive Surgery, Henry Ford Hospital, 2799 West Grand Boulevard K-8, Detroit, MI 48202, USA; Department of Surgery, Michigan State University, 4660 South Hagadorn Road, Suite #620, East Lansing, MI 48823, USA; Wayne State University School of Medicine, 540 East Canfield Street, Detroit, MI 48201, USA.

The external nasal valve is the anatomic structure formed by the caudal septum, alar rim, medial crura of the lower lateral cartilage, and nasal sill at the level of the nasal vestibule. Evaluation of external nasal valve dysfunction is dependent upon a thorough history and physical examination. Symptoms and quality of life impact are the main drivers for patients to seek out clinical evaluation.

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The evolving role of head up tilt test: New protocol and indications for optimizing the care of syncope patients.

Eur J Intern Med

January 2025

IRCCS Istituto Auxologico Italiano, Faint & Fall programme, Cardiology Unit and Department of Cardiovascular, Neural and Metabolic Sciences, S. Luca Hospital, Milan, Italy.

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Per- and polyfluoroalkyl substances (PFAS) exposure is associated with radioiodine therapy resistance and dedifferentiation of differentiated thyroid cancer.

Environ Pollut

January 2025

State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China; Department of Head and Neck Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China. Electronic address:

Differentiated thyroid cancer (DTC) generally has a favorable prognosis, and radioactive iodine (RAI) therapy is typically used for metastatic DTC that continues to progress and poses life-threatening risks. However, resistance to RAI in metastatic DTC significantly impairs treatment effectiveness. This study aims to identify potential compounds that may influence RAI efficacy.

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Inhibition of HDAC6 elicits anticancer effects on head and neck cancer cells through Sp1/SOD3/MKP1 signaling axis to downregulate ERK phosphorylation.

Cell Signal

January 2025

Institute of Medical Science, Ajou University School of Medicine, Suwon, Gyeonggi 16499, Republic of Korea; Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Gyeonggi 16499, Republic of Korea. Electronic address:

Oxidative stress caused by reactive oxygen species (ROS) and superoxides is linked to various cancer-related biological events. Extracellular superoxide dismutase (SOD3), an antioxidant enzyme that removes superoxides, contributes to redox homeostasis and has the potential to regulate tumorigenesis. Histone deacetylase 6 (HDAC6), a major HDAC isoform responsible for mediating the deacetylation of non-histone protein substrates, also plays a role in cancer progression.

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Cell-free hemoglobin released from hemolysis induces programmed cell death through iron overload and oxidative stress in grass carp (Ctenopharyngodon idella).

Fish Shellfish Immunol

January 2025

Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong Province 510222, China. Electronic address:

Intravascular hemolysis releases hemoglobin (Hb) from red blood cells under specific conditions, yet the effect of hemolysis in aquaculture systems remain poorly understood. In this study, a continuous hemolysis model for grass carp was established by injection of phenylhydrazine (PHZ) to investigate the mechanistic impacts of sustained hemolysis. PHZ-induced hemolysis altered liver color, and subsequent hematoxylin and eosin staining revealed substantial Hb accumulation in the head kidney, accompanied by inflammatory cell infiltration and vacuolization in liver tissue.

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Convolutional Neural Networks for the segmentation of hippocampal structures in postmortem MRI scans.

J Neurosci Methods

January 2025

Neuroimage Analytics Laboratory and Biggs Institute Neuroimaging Core, Glenn Biggs Institute for Neurodegenerative Disorders, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA; Research Imaging Institute, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA. Electronic address:

Background: The hippocampus plays a crucial role in memory and is one of the first structures affected by Alzheimer's disease. Postmortem MRI offers a way to quantify the alterations by measuring the atrophy of the inner structures of the hippocampus. Unfortunately, the manual segmentation of hippocampal subregions required to carry out these measures is very time-consuming.

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Nanoparticles play a significant role in enhancing crop yield and reducing nutrient loss through precise nutrient delivery mechanisms. However, it is imperative to ascertain the specific plant physiology altered by these nanoparticles. This study investigates the effects of green-synthesized nanoparticles, specifically boron nitride and sulphur, on sunflower yield, seed quality, and physiological activities.

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Head and neck squamous cell carcinomas (HNSCCs) represent a heterogeneous group of malignancies with multifactorial aetiologies. High-risk human papillomavirus (hrHPV) infections, particularly HPV16, and the dysregulation of telomerase activity, specifically through its catalytic subunit, telomerase reverse transcriptase (TERT) are among the key contributors to HNSCC development and progression. HPV promotes oncogenesis via the E6 and E7 oncoproteins, which inactivate tumour suppressors TP53 and RB1, leading to unchecked cellular proliferation.

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PD-L1 testing patterns in recurrent/metastatic head and neck squamous cell carcinoma (R/M HNSCC) in the U.S.

Oral Oncol

January 2025

Value and Implementation, Outcomes Research, Merck & Co., Inc., 126 East Lincoln Avenue, Rahway, NJ 07065, USA.

Background: Pembrolizumab with/without platinum + 5-FU is approved for the first-line (1L) treatment of R/M HNSCC, and its monotherapy use requires PD-L1 Combined Positive Score (CPS) ≥ 1. We aimed to understand PD-L1 testing patterns and associations with patient characteristics and treatment choice in R/M HNSCC.

Methods: Adults with R/M HNSCC initiating 1L systemic therapy were included from a U.

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