Αρχειοθήκη ιστολογίου

Δευτέρα 27 Σεπτεμβρίου 2021

The mismatch negativity responses of individuals with tinnitus with normal extended high-frequency hearing-is it possible to use mismatch negativity in the evaluation of tinnitus?

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Eur Arch Otorhinolaryngol. 2021 Sep 26. doi: 10.1007/s00405-021-07097-6. Online ahead of print.

ABSTRACT

OBJECTIVE: This study uses the multi-feature paradigm to compare the MMN responses of individuals with normal hearing thresholds, including the high frequencies with and without tinnitus.

METHODS: Sixteen subjects with chronic subjective idiopathic tinnitus and twenty matched healthy controls were included in the study. Participants with hearing thresholds (0.125-16 kHz) less than 20 dB HL and MoCA test scores above 21 were included in the study. MMN responses and topographical maps of the responses resulting from the multi-feature MMN paradigm were recorded from 22 surface scalp electrodes. Amplitude and latency parameters of the MMN responses of five different deviants, consisting of frequency, intensity, duration, location, and silent gap, were compared between the two groups.

RESULTS: The amplitudes of MMN responses were lower in the tinnitus group than in the control group at Fz electrode for all deviant types. At the same time, there was no difference between the groups for MMN latencies and, no correlation was found between THI and MMN.

CONCLUSION: According to our results, the MMN might indicate a possible impairment in pre-attentive and automatic central auditory processing for chronic tinnitus patients. Since MMN responses in the tinnitus group differ from those of healthy individuals, it might be used as a reference for evaluating the central auditory pathways of tinnitus patients.

PMID:34564749 | DOI:10.1007/s00405- 021-07097-6

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Does post-mastectomy radiation therapy worsen outcomes in immediate autologous breast flap reconstruction? A systematic review and meta-analysis

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J Plast Reconstr Aesthet Surg. 2021 Aug 28:S1748-6815(21)00383-1. doi: 10.1016/j.bjps.2021.08.005. Online ahead of print.

ABSTRACT

BACKGROUND: There is great uncertainty regarding the practice of immediate autologous breast reconstruction (IBR) when post-mastectomy radiotherapy (PMRT) is indicated. Plastic surgery units differ in their treatment protocols, with some recommending delayed breast reconstruction (DBR) following PMRT. IBR offers significant cosmetic and psychosocial benefits; however, the morbidity of flap exposure to radiation remains unclear.

OBJECTIVE: The aim of this review was to comprehensively analyze the existing literature comparing autologous flaps exposed to PMRT and flaps with no radiation exposure.

METHODS: A comprehensive search in MEDLINE, EMBASE and CENTRAL databases was conducted in November 2020. Primary studies comparing IBR with and without adjuvant PMRT were assessed for the following primar y outcomes: clinical complications, observer-reported outcomes and patient-reported satisfaction rates. Meta-analysis was performed to obtain pooled risk ratios of individual complications.

RESULTS: Twenty-one articles involving 3817 patients were included. Meta-analysis of pooled data gave risk ratios for fat necrosis (RR = 1.91, p < 0.00001), secondary surgery (RR = 1.62, p = 0.03) and volume loss (RR = 8.16, p < 0.00001) favoring unirradiated flaps, but no significant difference was observed in all other reported complications. The no-PMRT group scored significantly higher in observer-reported measures. However, self-reported aesthetic and general satisfaction rates were similar between groups.

CONCLUSION: IBR should be offered after mastectomy to patients requiring PMRT. The higher risks of fat necrosis and contracture appear to be less clinically relevant as corroborated by positive scores from patients developing these complications. Preoperative and intraope rative measures should be taken to further optimize reconstruction and mitigate post-radiation sequel. Careful management of patients' expectations is also imperative.

LEVEL OF EVIDENCE: Level III.

PMID:34565703 | DOI:10.1016/j.bjps.2021.08.005

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Nasal irrigation with corticosteroids in Brazil: the clinical response of 1% compounded budesonide drops and betamethasone cream

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Braz J Otorhinolaryngol. 2021 Aug 4:S1808-8694(21)00131-2. doi: 10.1016/j.bjorl.2021.06.008. Online ahead of print.

ABSTRACT

INTRODUCTION: High-volume corticosteroid nasal irrigation is a treatment option in patients with chronic rhinosinusitis. In Brazil, alternatives are used to optimize its cost and popularize its use, such as 1% compounded budesonide drops or betamethasone cream, and it is necessary to study these treatment modalities.

OBJECTIVE: To evaluate the clinical response of nasal irrigation with 1% compounded budesonide drops or betamethasone cream compared to nasal sprays utilized in patients with chronic rhinosinusitis.

METHODS: This was a retrospective observational study with 257 patients. One hundred and eight patients using corticosteroid nasal irrigation (292 treatment cycles) and 149 using corticosteroid nasal spray (300 treatment cycles) were included. Evaluation of subjective improvement, adverse even ts, exacerbations, and objective assessments with SNOT-22 and Lund-Kennedy endoscopic score were performed, in addition to sub-analyses related to nasal polyps and previous surgery.

RESULTS: Corticosteroid nasal irrigation and corticosteroid nasal spray improved the Lund-Kennedy endoscopic score, with more adverse events in the corticosteroid nasal irrigation group. Previous surgery increased corticosteroid nasal irrigation improvement, with greater subjective improvement and fewer exacerbations. 1% compounded budesonide drops were better than betamethasone cream in the Lund-Kennedy endoscopic score, with fewer adverse events. A 1,000 µg dose of 1% compounded budesonide drops was more effective than 500 µg.

CONCLUSION: Corticosteroid nasal irrigation was effective in improving the Lund-Kennedy endoscopic score in chronic rhinosinusitis, especially in patients with nasal polyps and previous surgery, in addition to promoting a higher rate of subjective improvement and fe wer exacerbations than corticosteroid nasal spray, but with more adverse events. 1% compounded budesonide drops improved the Lund-Kennedy endoscopic score with fewer adverse events than betamethasone cream, particularly at higher doses (1000 µg).

PMID:34563470 | DOI:10.1016/j.bjorl.2021.06.008

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cochleovestibular neurovascular compressive syndrome (CVCS)-induced drop attack

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Ear Nose Throat J. 2021 Sep 25:1455613211043672. doi: 10.1177/01455613211043672. Online ahead of print.

ABSTRACT

We report a case of cochleovestibular neurovascular compressive syndrome (CVCS)-induced drop attack treated with microvascular decompression (MVD) of the superior vestibular nerve. This report discusses the merits of surgical intervention through a review of related literature. A 58-year-old woman was referred to our clinic with a chief complaint of intermittent, strong, right-sided tinnitus lasting for a few seconds immediately prior to drop attack. Magnetic resonance imaging (MRI) showed bilateral neurovascular contact between the anterior inferior cerebellar artery (AICA) and the vestibulocochlear nerve. Based on MRI findings, history of present illness, and response to anticonvulsants, CVCS was suspected, and surgical decompression on the right side was subsequently performed. The patient became asymptomatic immediately after the surgery, and the vestibular-evoked myogenic potentials were normalized. No recurrence was reported during a 1-year follow-up period.

PMID:34565213 | DOI:10.1177/01455613211043672

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Comparative Treatment Outcome in T3N0 Glottic Cancer With and Without Vocal Fold Fixation Receiving Radiation Therapy and Concurrent Low-Dose Intra-Arterial Cisplatin Infusion

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Ann Otol Rhinol Laryngol. 2021 Sep 25:34894211047789. doi: 10.1177/00034894211047789. Online ahead of print.

ABSTRACT

OBJECTIVES: Selective radiotherapy and concomitant intra-arterial cisplatin infusion (m-RADPLAT) with a lower cisplatin dosage have been performed for organ and function preservation in patients with locally advanced squamous cell carcinoma of the larynx (SCC-L), and results showing a lower rate of adverse events have been reported. This study evaluated the t reatment outcomes of patients with T3N0 glottic SCC-L with or without vocal fold fixation (VFF) who were treated with m-RADPLAT.

METHODS: We retrospectively reviewed the data of 33 patients with T3N0 SCC-L who received m-RADPLAT.

RESULTS: The vocal fold in patients with VFF 3 months after completing m-RADPLAT resumed normal movement in 15 patients (83%) and persisted fixation in 3 (17%). The 3-year local control, laryngeal cancer-specific survival, and overall survival rates of patients with or without VFF were 88.9% and 86.7%, 94.1% and 93.3%, and 88.9% and 86.7%, respectively. Additionally, the 3-year freedom from laryngectomy, laryngectomy-free survival, and laryngo-esophageal dysfunction-free survival rates of patients with or without VFF were 94.4% and 86.7%, 88.9% and 73.3%, and 83.3% and 73.3%, respectively. Grade 3 or higher toxicities were observed in all patients: leukopenia in 4 patients (12%), neutropenia in 5 (15%), anemia in 2 (6%), thrombocytopenia in 3 (9 %), and mucositis in 2 (6%).

CONCLUSIONS: This study demonstrated that m-RADPLAT yielded VFF improvement and a favorable survival while maintaining laryngeal function not only in patients with T3N0 glottic SCC-L without VFF but also in patients with VFF.

PMID:34565187 | DOI:10.1177/00034894211047789

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SARS-CoV-2 vaccination may help patients with persistent COVID-19 smell dysfunction

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Ear Nose Throat J. 2021 Sep 26:1455613211044770. doi: 10.1177/01455613211044770. Online ahead of print.

NO ABSTRACT

PMID:34569299 | DOI:10.1177/01455613211044770

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Restoration of High Frequency Auditory Perception After Robot-Assisted or Manual Cochlear Implantation in Profoundly Deaf Adults Improves Speech Recognition

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Front Surg. 2021 Sep 10;8:729736. doi: 10.3389/fsurg.2021.729736. eCollection 2021.

ABSTRACT

Background and Purpose: Robot-assisted cochlear implantation has recently been implemented in clinical practice; however, its effect on hearing outcomes is unknown. The aim of this preliminary study was to evaluate hearing performance 1 year post-implantation whether the electrode array was inserted manually or assisted by a robot. Methods: Forty-two profoundly deaf adults were implanted either manually (n = 21) or assisted by a robot (RobOtol®, Collin, Bagneux, France) with three different electrode array types. Participants were paired by age, and electrode array type. The scalar position of the electrode array in the cochlea was assessed by 3D reconstruction from the pre- and post-implantation computed tomography. Pure-tone audiometry and speech perception in silence (percentage of disyllabic words at 60 dB) were tested on the implanted ear 1 year post-implantation in free-field conditions. The pure-tone average was calculated at 250-500-750 Hz, 500-1,000-2,000-3,000 Hz, and 3,000-4,000-8,000 Hz for low, mid, and high frequencies, respectively. Results: One year after cochlear implantation, restoration of the high-frequency thresholds was associated with better speech perception in silence, but not with low or mid frequencies (p < 0.0001; Adjusted R 2 = 0.64, polynomial non-linear regression). Although array translocation was similar using either technique, the number of translocated electrodes was lower when the electrode arrays had been inserted with the assistance of the robot compared with manual insertion (p = 0.018; Fisher's exact test). Conclusion: The restoration of high-frequency thresholds (3,000-4,000-8,000 Hz) by cochlear implantation was associated with good speech perception in silence. The numbers of translocated electrodes were reduced afte r a robot-assisted insertion.

PMID:34568420 | PMC:PMC8461256 | DOI:10.3389/fsurg.2021.729736

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Is There an Ideal Performance Time for the Latex Tube Exercise?

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SOVTE has been widely used in voice clinic. Estimates of time to perform the technique with a flexible latex tube are still unknown. This study aimed to investigate the immediate effect of flexible latex tube immersed in water on amateur singers after 1, 3, 5 and 7 minutes, considering: (a) the singers' self-assessment regarding voice and vocal effort; (b) acoustic parameters; and (c) auditory-perceptual parameters of voice quality.
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Neuroectodermal tumours of the sino-nasal tract: a clinicopathological study of 18 cases with a newly proposed revised classification and a brief review of literature

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Eur Arch Otorhinolaryngol. 2021 Sep 27. doi: 10.1007/s00405-021-07051-6. Online ahead of print.

ABSTRACT

AIM: Sino-nasal tract tumours constitute 3% of the head and neck malignancies. Among these tumours, neuroectodermal tumours are rare with histo-morphological and immunohistochemical overlap making them a challenge for the pathologist. We included Ewing's/PNET, olfactory neuroblastoma (OFN), mucosal malignant melanomas (MMM), Melanotic neuroectodermal tumour of infancy (MNTI), small-cell neuroendocrine carcinoma (SNEC), and the newest entity Adamantinoma like Ewing's sarcoma (ALES) as part of the neuroectodermally derived tumours of the sino-nasal tract. The last three entities were added to the existing ones, which also has been emphasized in this paper.

METHODS AND RESULTS: A comprehensive analysis was done on all neuroectodermally derived tumours from 2016 to 2020. A total of 18 cases were collected, which included OFN (10 c ases), SNEC (2 cases), MMM (2 cases), Ewing's/PNET (2 cases), MNTI (1 case), and ALES (1 case). The most common presentation in NE tumours was nasal obstruction (80-100%). Except for OFN, all other tumours were confined to the nasal and paranasal sinuses. 4/10 cases of OFN showed orbital extension. Cervical lymph-node metastasis was seen in 50% of cases of SNEC and MMM groups. An array of relevant immune-histochemical markers were performed. The marker expression was very subtle among the groups. On follow-up, recurrence was seen in the OFN and MMM groups in 30 and 50%, respectively. Metastasis was seen in SNEC group (100%) and OFN group (10%).

CONCLUSION: As sino-nasal neuroectodermal tumours pose a diagnostic challenge and have different therapies and are prognostically different, the pathologist must be aware of the subtle morphological, immunohistochemical clues which have been dealt with in-depth in this study.

PMID:34568968 | DOI:10.1007/s00405-021-07051-6

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Microtomographic reconstruction of mandibular defects treated with xenografts and collagen-based membranes: A pre-clinical minipig model

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Med Oral Patol Oral Cir Bucal. 2021 Sep 25:24811. doi: 10.4317/medoral.24811. Online ahead of print.

ABSTRACT

BACKGROUND: The goal of this study was to evaluate hard tissue response following guided bone regeneration using commercially available bovine bone grafts and collagen membranes; bilayer collagen membrane and porcine pericardium-based membrane, by means of a non-destructive three-dimensional (3D) computerized volumetric analysis following microtomography reconstruction.

MATERIAL AND METHODS: Bone regenerative properties of various bovine bone graft materials were evaluated in the Göttingen minipig model. Two standardized intraosseous defects (15mm x 8mm x 8mm) were created bilaterally of the mandible of eighteen animals (n=72 defects). Groups were nested within the same subject and randomly distributed among the sites: (i) negative control (no graft and membrane), (ii) bovine bone graft/bilayer collagen membrane (BOB) (i ii) Bio-Oss® bone graft/porcine pericardium-based membrane (BOJ) and (iv) cerabone® bone graft/porcine pericardium-based membrane (CJ). Samples were harvested at 4, 8, and 12-week time points (n=6 animal/time point). Segments were scanned using computerized microtomography (μCT) and three dimensionally reconstructed utilizing volumetric reconstruction software. Statistical analyses were performed using IBM SPSS with a significance level of 5%.

RESULTS: From a temporal perspective, tridimensional evaluation revealed gradual bone ingrowth with the presence of particulate bone grafts bridging the defect walls, and mandibular architecture preservation over time. Volumetric analysis demonstrated no significant difference between all groups at 4 weeks (p>0.127). At 8 and 12 weeks there was a higher percentage of new bone formation for control and CJ groups when compared to BOB and BOJ groups (p<0.039). The natural bovine bone graft group showed more potential for graft reso rption over time relative to bovine bone graft, significantly different between 4 and 8 weeks (p<0.003).

CONCLUSIONS: Volumetric analysis yielded a favorable mandible shape with respect to time through the beneficial balance between graft resorption/bone regenerative capacity for the natural bovine bone graft.

PMID:34564687 | DOI:10.4317/medoral.24811

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Expression profile of components of the β-catenin destruction complex in oral dysplasia and oral cancer

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Med Oral Patol Oral Cir Bucal. 2021 Sep 25:24528. doi: 10.4317/medoral.24528. Online ahead of print.

ABSTRACT

BACKGROUND: Oral cancer represents the sixth most common cancer in the world and is associated with 40-50% survival at 5 years. Within oral malignancies, oral squamous cell carcinoma (OSCC) is commonly preceded by potentially malignant lesions, which, according to histopathological criteria, are referred to as oral dysplasia and their diagnosis are associated with higher rates of malignant transformation towards cancer. We recently reported that aberrant activation of the Wnt/β‑catenin pathway is due to overexpression of Wnt ligands in oral dysplasia. However, the expression of other regulators of this pathway, namely components of the β-catenin destruction complex has not been explored in oral dysplasia.

MATERIAL AND METHODS: Using immunohistochemical analyses, we evaluated nuclear expression of β‑catenin and its association with Wnt3a and Wnt5a. Likewise, components of the β-catenin destruction complex, including Adenomatous Polyposis Coli (APC), Axin and Glycogen Synthase Kinase 3 beta (GSK-3β) were also evaluated in oral dysplasia and OSCC biopsies.

RESULTS: We found that moderate and severe dysplasia samples, which harbored increased expression of nuclear β‑catenin, depicted augmented cytoplasmic expression of GSK‑3β, Axin and APC, in comparison with OSCC samples. Also, GSK-3β was found nuclear in mild dysplasia and OSCC samples, when compared with other study samples.

CONCLUSIONS: Cytoplasmic levels of components of the β-catenin destruction complex are increased in oral dysplasia and might be responsible of augmented nuclear β‑catenin.

PMID:34564680 | DOI:10.4317/medoral.24528

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