Δευτέρα 25 Οκτωβρίου 2021

Whole-Body Radioiodine Effective Half-Life in Patients with Differentiated Thyroid Cancer

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Diagnostics (Basel). 2021 Sep 22;11(10):1740. doi: 10.3390/diagnostics11101740.

ABSTRACT

Background: Radioactive 131I (RAI) therapy is used in patients with differentiated thyroid cancer (DTC) after total thyroidectomy for remnant ablation, adjuvant treatment or treatment of persistent disease. 131I retention data, which are used to indicate the time at which a 131I treated DTC patient can be released from the hospital, may bring some insight s regarding clinical factors that prolong the length of hospitalization. The aim of this study was to investigate the 131I whole-body retention in DTC patients during 131I therapy. Methods: We monitored 166 DTC patients to follow the 131I whole-body retention during 131I therapy with a radioactivity detector fixed on the ceiling of each protected room. A linear regression fit permitted us to estimate the whole-body 131I effective half-life in each patient, and a relationship was sought between patients' clinical characteristics and whole-body effective 131I half-life. Results: The effective 131I half-life ranged from 4.08 to 56.4 h. At multivariable analysis, longer effective 131I half-life was related to older age and extensive extra-thyroid disease. Conclusions: 131I effective half-life during 131I treatment in DTC patients is highly variable amon g patients and is significantly longer in older and in patients with RAI uptake in large thyroid remnants or in extrathyroidal disease that significantly prolongs the whole-body retention of 131I.

PMID:34679438 | PMC:PMC8535104 | DOI:10.3390/diagnostics11101740

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A comparative study of porous polyethylene versus absorbable polydextro- and polylevolactic-lactide plate in reconstruction of isolated medial orbital wall fracture

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J Plast Reconstr Aesthet Surg. 2021 Sep 17:S1748-6815(21)00410-1. doi: 10.1016/j.bjps.2021.08.023. Online ahead of print.

ABSTRACT

BACKGROUND: Several materials for medial orbital wall reconstruction have been mentioned in the literature. Our main purpose was to investigate postoperative enophthalmos and diplopia after medial orbital wall reconstruction with polydextro- and polylevolactic (poly-L/DL) acid (P[L/DL]LA) mesh plates and porous polyethylene plates.

METHODS: Using a retrospective study design, we enrolled a cohort of isolated medial blowout fracture patients treated during a 58-month interval. The predictor variable was medial orbital wall reconstruction materials (P(L/DL)LA mesh plate and porous polyethylene plate. The main outcome variables included the occurrence of postoperative enophthalmos and diplopia at 1 week, 1, 3, 6, and 12 months post-surgery . Appropriate descriptive, uni- and bivariate statistics were computed, and P < 0.05 was considered significant.

RESULTS: Three hundred-two isolated medial blowout fracture patients were included (24.5% females, 67% treated with P(L/DL)LA mesh plate). Exophthalmos measured highest in both groups 1 week after surgery and decreased steadily for 6 months postoperatively. Statistically significant differences were observed between both groups at 1 week, 1 month, and 3 months after surgery, with a higher incidence of exophthalmos observed in the P(L/DL)LA mesh plate group (P < 0.001). No significant differences were observed at 6 and 12 months after surgery.

CONCLUSION: The occurrence of enophthalmos after medial blowout fracture reconstruction with P(L/DL)LA mesh plate is comparable with the use of porous polyethylene plate. Both P(L/DL)LA mesh and porous polyethylene plates are, th erefore, reliable implants for medial orbital wall reconstruction.

PMID:34690092 | DOI:10.1016/j.bjps.2021.08.023

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Intermediate Invasive Fungal Sinusitis, a Distinct Entity From Acute Fulminant and Chronic Invasive Fungal Sinusitis

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Ann Otol Rhinol Laryngol. 2021 Oct 25:34894211052854. doi: 10.1177/00034894211052854. Online ahead of print.

ABSTRACT

BACKGROUND: The current classification system of invasive fungal sinusitis (IFS) includes acute (aIFS) and chronic (cIFS) phenotypes. Both phenotypes display histopathologic evidence of tissue necrosis, but differ by presence of angioinvasion, extent of necrosis, and disease progression. aIFS is defined by a rapid onset of symptoms, while cIFS slowly progresse s over ≥12 weeks. However, a subset of IFS patients do not fit into the clinical presentation and histopathologic characteristics of either aIFS or cIFS.

OBJECTIVES: To investigate the demographic, clinical, and histopathologic characteristics of a distinct subset of IFS.

METHODS: Retrospective review of patients with IFS from a single tertiary-care institution (2010-2020). Patients with symptoms for ≤4 weeks were classified as aIFS if they displayed endoscopic evidence of mucosal necrosis or fungal angioinvasion on pathology. Patients with slowly progressive IFS for ≥12 weeks were classified as cIFS. Patients with symptom duration between 4 and 12 weeks with evidence of invasive fungal disease were classified as a new entity and were further investigated.

RESULTS: Of the 8 patients identified, 50% were immunosuppressed at presentation. The mean symptom duration prior to presentation was 50.5 days (SD 16.8), and common symptoms included facial pain (100%), vi sion change (87.5%), and blindness (37.5%). Two patients (25%) died of their disease. Sites of fungal involvement confirmed by histopathology included sphenoid (62.5%) and ethmoid sinuses (12.5%), orbital apex (25%), optic nerve (12.5%), pterygopalatine fossa (12.5%), and clivus (12.5%). Fungal elements but without obvious angioinvasion, were identified in all specimens, and fungus balls (50%), granulomas (37.5%), and giant cells (25%) were also observed on histopathology. CT and MRI radiographic imaging showed findings consistent with orbital, intracranial, or skull base involvement in all patients.

CONCLUSION: We propose intermediate IFS as a new subgroup of patients with IFS who do not fit into the standard classification of aIFS or cIFS.

PMID:34694144 | DOI:10.1177/00034894211052854

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Understanding Extremely Elevated Dizziness Handicap Inventory Scores: An Analysis of Predictive Factors

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Ann Otol Rhinol Laryngol. 2021 Oct 25:34894211053788. doi: 10.1177/00034894211053788. Online ahead of print.

ABSTRACT

BACKGROUND: The Dizziness Handicap Inventory (DHI) measures impairment in quality of life due to dizziness, with higher scores indicating greater impairment. Little is known about the clinical features that predict extremely elevated DHI scores (eeDHI).

OBJECTIVE: To identify clinical features associated with eeDHI.

METHODS: A retrospective analysi s was conducted of 217 patients with dizziness between October 2016 and April 2019. Patients with eeDHI had DHI scores 1 standard deviation higher than the mean. Analyses were performed to generate odds ratios (OR) for having eeDHI based on clinical features and exam findings.

RESULTS: The cut-off for eeDHI scores was 71. In total, 20.7% had eeDHI. Logistic regression identified 6 independent predictors for eeDHI scores: numbness in the face or body during dizziness (OR = 5.99, 95% CI 1.77-20.30), history of falls (OR = 4.37, 95% CI 1.74-10.97), female sex (OR = 2.81, 95% CI 1.18-6.66), caloric weakness (OR = 2.61, 95% CI 1.36-5.01), total number of diagnoses associated with dizziness (OR = 2.17, 95% CI 1.11-4.28), and total number of symptoms during dizziness (OR = 1.25, 95% CI 1.07-1.45).

CONCLUSIONS: These findings suggest that patients with eeDHI have severe disease and should be screened for falls. By understanding the drivers of high DHI scores, we can alleviate di sease related suffering for vestibular disorders.

PMID:34694153 | DOI:10.1177/00034894211053788

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Clinical significance of the cognition-related pathogenic proteins in plasma neuronal-derived exosomes among normal cognitive adults over 45 years old with olfactory dysfunction

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Eur Arch Otorhinolaryngol. 2021 Oct 24. doi: 10.1007/s00405-021-07143-3. Online ahead of print.

ABSTRACT

OBJECTIVES: Exosomal Phospho-Tau-181(P-T181-tau), Total tau (T-tau), and amyloid-β peptide 42 (Aβ42) have been proved the capacity for the amnestic mild cognitive impairment (MCI) and the diagnosis of Alzheimer's disease (AD). This study aimed to explore the cognitive function and the levels of P-T181-tau, T-tau, and Aβ42 in neuronal-derived exosomes (NDEs) extracted from plasma in normal cognitive adults over 45 years old with olfactory dysfunction.

METHODS: A cross-sectional survey of 29 participants aged over 45 was conducted. Plasma exosomes were isolated, precipitated, and enriched by immuno-absorption with anti- L1 cell adhesion molecule (L1CAM) antibody. NDEs were characterized by CD81, and extracted NDE protein (P-T181-tau, T-tau, and Aβ42) biomarkers were quantified by enzyme-linked immunosorbent assay (ELISAs). O lfactory performance was assessed by Sniffin' Sticks and cognitive performance was assessed by Montreal Cognitive Assessment (MoCA).

RESULTS: There was no significant difference between adults with olfactory dysfunction and without olfactory dysfunction regarding the cognitive function as measured by MoCA and all the participants showed normal cognition. Adults with olfactory dysfunction showed a higher concentration of P-T181-tau in plasma NDEs than did adults without olfactory dysfunction (P = 0.034). Both the levels of P-T181-tau (r = - 0.553, P = 0.003) and T-tau (r = - 0.417, P = 0.034) negatively correlated with the odor identification scores. In addition, the level of T-tau negatively correlated with MoCA scores (r = - 0.597, P = 0.002). The levels of P-T181-tau (r = - 0.464, P = 0.022) and T-tau (r = - 0.438, P = 0.032) negatively correlated with the delayed recall scores.

CONCLUSIONS: This study demonstrated that cognition-related pathogenic proteins including P -T181-tau in plasma NDEs were significantly increased in adults over 45 years old with olfactory dysfunction before the occurrence of cognitive impairment. The impaired odor identification and the delayed recall function were highly associated with the increased levels of P-T181-tau and T-tau in plasma NDEs.

PMID:34693486 | DOI:10.1007/s00405-021-07143-3

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Clinical Biomarkers in Otolaryngology-Head and Neck Surgery

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The number of biomarkers in use in otolaryngology is rapidly expanding representing a new diagnostic modality for our field. This review defines the key biomarkers that are currently or likely to be soon translated into clinical use within the field of otolaryngology. The majority of these biomarkers are in the form of proteins such as beta-2 transferrin, thyroglobulin, and P16. Given their growing impact on diagnosis, management and surveillance of otolaryngologic disorders periodic surveys are needed for education and to guide further advances and applications of otolaryngologic biomarkers.

What is a beta 2 transferrin test?
Beta-2-transferrin is a form of the protein transferrin that is present in cerebrolspinal fluid (CSF), but not usually found in blood, nasal secretions or other body fluids. It is used to distinguish CSF from other watery discharge from the nose or ear after a traumatic injury to the brain and or spine.

What does a high thyroglobulin mean?
Your thyroglobulin levels are high and/or have increased over time. This may mean thyroid cancer cells are growing, and/or cancer is starting to spread. Little or no thyroglobulin was found. This may mean that your cancer treatment has worked to remove all thyroid cells from your body.

What is p16 positive mean?
Abstract. Expression of p16INK4A (p16 positive) is highly correlated with human papilloma virus (HPV) infection in head and neck squamous cell carcinoma (HNSCC), however, p16-positivity is not limited to HPV positive tumors and therefore, not a perfect surrogate for HPV.

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Ear Nose Throat J. 2021 Oct 25:1455613211050698. doi: 10.1177/01455613211050698. Online ahead of print.

ABSTRACT

OBJECTIVE: The purpose of this paper is to review the literature and compile promising and clinically relevant biomarkers in otolaryngology-head & neck surgery not related to autoimmune disorders.

STUDY DESIGN: Narrative review.

METHODS: PubMed and Google Scholar were queried using combined key words such as "biomarkers" and "otolaryngology." Addit ional queries were made with combined key words such as "biomarkers" and a particular subspecialty such as "rhinology" or "otology" to maximize yield of relevant titles. Subsequently, specific biomarkers identified, such as "beta-2 transferrin," were used as key words. Relevant titles were reviewed and selected for abstract review. Applicable abstracts were then selected for review of the full text.

RESULTS: Biomarkers currently in clinical use within the field of otolaryngology were included in this review. The compiled biomarkers were then detailed individually regarding their molecular characteristics, function, and clinical significance.

CONCLUSIONS: The number of biomarkers in use in otolaryngology is rapidly expanding representing a new diagnostic modality for our field. This review defines the key biomarkers that are currently or likely to be soon translated into clinical use within the field of otolaryngology. The majority of these biomarkers are in the form of p roteins such as beta-2 transferrin, thyroglobulin, and P16. Given their growing impact on diagnosis, management and surveillance of otolaryngologic disorders periodic surveys are needed for education and to guide further advances and applications of otolaryngologic biomarkers.

PMID:34694171 | DOI:10.1177/01455613211050698

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Real-World Efficacy and Safety of Multi-Tyrosine Kinase Inhibitors in Radioiodine Refractory Thyroid Cancer

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Thyroid, Volume 31, Issue 10, Page 1531-1541, October 2021.
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