Publications by authors named "Pegge S"

Research Question: The goal of this study was to assess the diagnostic accuracy of spinal time-resolved contrast-enhanced MR angiography (4D-MRA) for the detection and localization of spinal dural arteriovenous fistulas (SDAVF) in our institution.

Material And Methods: Single center retrospective cohort study of patients with the clinical suspicion of a SDAVF. Patients were included who had undergone spinal 4D-MRA in the period January 2010-February 2021.

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  • * A systematic review and meta-analysis revealed that 4D-MRA has a very high sensitivity of 98.2% and a specificity of 88.2% compared to DSA for detecting SDAVFs.
  • * The findings suggest that 4D-MRA can accurately locate SDAVFs and potentially streamline the diagnostic process, reducing patient discomfort and procedural risks associated with DSA.
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Background And Purpose: Radiological features on magnetic resonance imaging (MRI) were attributed to oligodendroglioma, although the diagnostic accuracy in a real-world clinical setting remains partially elusive. This study investigated the accuracy and robustness of tumor heterogeneity and tumor border delineation on T2-weighted MRI to distinguish oligodendroglioma from astrocytoma.

Materials And Methods: Eight readers from three different specialties (radiology, neurology, neurosurgery) with varying levels of experience blindly rated 79 T2-weighted MR images of patients with either oligodendroglioma or astrocytoma.

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Background: Previous randomised controlled trials could not demonstrate that surgical evacuation of intracerebral haemorrhage (ICH) improves functional outcome. Increasing evidence suggests that minimally invasive surgery may be beneficial, in particular when performed early after symptom onset. The aim of this study was to investigate safety and technical efficacy of early minimally invasive endoscopy-guided surgery in patients with spontaneous supratentorial ICH.

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  • The study investigates the validity of subclassifying Koos 2 vestibular schwannoma (VS) tumors based on their size and proximity to the brainstem, challenging the standard practice of immediate treatment following growth detection.
  • Six experts evaluated 43 MRI scans to assess the reliability of the classification, finding a near-perfect agreement on Koos 2a tumors and high agreement on Koos 2b tumors.
  • Results showed excellent reliability among raters, suggesting that this refined classification can help inform treatment decisions that prioritize patient-centered care rather than just tumor size growth.
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The aim of this study is to contribute to a better description of the genotypic and phenotypic spectrum of DFNA6/14/38 and aid in counseling future patients identified with this variant. Therefore, we describe the genotype and phenotype in a large Dutch-German family (W21-1472) with autosomal dominant non-syndromic, low-frequency sensorineural hearing loss (LFSNHL). Exome sequencing and targeted analysis of a hearing impairment gene panel were used to genetically screen the proband.

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  • Radiologists usually prefer thick-section CT images for clinical interpretation due to lower noise but may use thin-section images for specific issues; deep learning reconstruction (DLR) can produce low-noise thin-section images.
  • This study aimed to compare image quality of thin-section DLR images with thin- and thick-section hybrid iterative reconstruction (HIR) images using a sample of 50 patients who underwent abdominal CT scans.
  • Results showed that DLR images received significantly better subjective quality ratings from radiologists for noise and overall quality compared to both HIR images, with DLR exhibiting notably lower noise levels.
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Background: Paradoxical inflammatory responses can occur during microbiologically successful antituberculous therapy. Optimal treatment is unknown, but corticosteroids are used most often. It is likely that interleukin-1 (IL-1) plays a central role in the development of these paradoxical responses, and if corticosteroids fail or are undesirable because of adverse effects, anti-IL-1 therapy may therefore be a rational choice.

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Background: Increased head and neck cancer (HNC) survival requires attention to long-term treatment sequelae. Irradiated HNC survivors have a higher ischemic stroke risk. However, the pathophysiology of radiation-induced vasculopathy is unclear.

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Objectives: Ultrasmall superparamagnetic iron oxide (USPIO)-enhanced magnetic resonance imaging (MRI) is a potential diagnostic tool for lymph node assessment in patients with head and neck cancer. Validation by radiologic-pathologic correlation is essential before the method is evaluated in clinical studies. In this study, MRI signal intensity patterns of lymph nodes are correlated to their histopathology to develop a new USPIO-enhanced MRI reading algorithm that can be used for nodal assessment in head and neck cancer patients.

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Background: With a growing, younger population of head and neck cancer survivors, attention to long-term side-effects of prior, often radiotherapeutic, treatment is warranted. Therefore, we studied the long-term cognitive effects in young adult patients irradiated for head and neck neoplasms (HNN).

Methods: Young to middle-aged adults with HNN (aged 18-40 years) and treated with unilateral neck irradiation ≥ 5 years before inclusion underwent cardiovascular risk and neuropsychological assessments and answered validated questionnaires regarding subjective cognitive complaints, fatigue, depression, quality of life, and cancer-specific distress.

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Background: Otomastoiditis caused by Mycobacterium abscessus is rare, but its incidence has increased over the past decades and its optimal treatment remains unknown. This study aims to summarise the clinical and therapeutic features and find characteristics of patients with M. abscessus otomastoiditis associated with favourable treatment outcomes.

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Aims: Management of kaposiform haemangioendotheliomas (KHE) with Kasabach-Merritt phenomenon is challenging in young infants who are subjected to developmental pharmacokinetic changes. Sirolimus, sometimes combined with corticosteroids, can be used as an effective treatment of KHE. Simultaneously, toxicities such as interstitial pneumonitis related to the use of sirolimus may be fatal.

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Aim: Because the tyrosine kinases c-MET and vascular endothelial growth factor receptors (VEGFR) are often overexpressed in salivary gland cancer (SGC), this study evaluated the efficacy and safety of cabozantinib in patients with recurrent/metastatic (R/M) SGC.

Patients And Methods: A single-centre phase II study was conducted. Patients with immunohistochemical c-MET-positive R/M SGC were included in three cohorts: adenoid cystic carcinoma (ACC); salivary duct carcinoma (SDC) and other miscellaneous SGCs.

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Objective: To evaluate the long-term ipsi- and contralateral hearing of patients with a unilateral enlarged vestibular aqueduct (EVA).

Study Design: Multicenter retrospective cohort study.

Setting: Three tertiary otology and audiology referral centers.

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Pathogenic variants in SLC26A4 have been associated with autosomal recessive hearing loss (arHL) and a unilateral or bilateral enlarged vestibular aqueduct (EVA). SLC26A4 is the second most frequently mutated gene in arHL. Despite the strong genotype-phenotype correlation, a significant part of cases remains genetically unresolved.

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Purpose: To implement and test a deep learning approach for the segmentation of the arterial and venous cerebral vasculature with four-dimensional (4D) CT angiography.

Materials And Methods: Patients who had undergone 4D CT angiography for the suspicion of acute ischemic stroke were retrospectively identified. A total of 390 patients evaluated in 2014 ( = 113) or 2018 ( = 277) were included in this study, with each patient having undergone one 4D CT angiographic scan.

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  • Necrotizing external otitis (NEO) is a serious complication of ear infections, and this study focuses on comparing how well MRI and CT scans identify the patterns of NEO disease extension.
  • The researchers reviewed 21 patient cases, finding that while both imaging techniques identified anterior extensions, CT missed some medial and intracranial extensions that MRI detected, and MR missed some posterior extensions.
  • Ultimately, the study suggests that both CT and MRI are useful together for accurately diagnosing and assessing the extent of NEO, highlighting their complementary roles in medical imaging.
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Merkel cell carcinoma (MCC) is a rare neuroendocrine tumor of the skin mainly seen in the elderly. Its incidence is rising due to ageing of the population, increased sun exposure, and the use of immunosuppressive medication. Additionally, with the availability of specific immunohistochemical markers, MCC is easier to recognize.

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  • DLR (Deep Learning Reconstruction) provides better image quality than MBIR (Model-Based Iterative Reconstruction) for cerebral non-contrast CT scans.
  • DLR is superior to Hybrid-IR (Hybrid-Iterative Reconstruction) in terms of noise level and grey-white matter differentiation, though they are similar for other qualities.
  • DLR has a slightly longer reconstruction time compared to Hybrid-IR, but is significantly faster than MBIR, which takes much longer to process images.
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In head and neck cancer, the presence of nodal disease is a strong determinant of prognosis and treatment. Despite the use of modern multimodality diagnostic imaging, the prevalence of occult nodal metastases is relatively high. This is why in clinically node negative head and neck cancer the lymphatics are treated "electively" to eradicate subclinical tumor deposits.

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Glioblastoma (GBM) is the most malignant primary brain tumor for which no curative treatment options exist. Non-invasive qualitative (Visually Accessible Rembrandt Images (VASARI)) and quantitative (radiomics) imaging features to predict prognosis and clinically relevant markers for GBM patients are needed to guide clinicians. A retrospective analysis of GBM patients in two neuro-oncology centers was conducted.

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