Publications by authors named "W A Mason"
Background: PAH exposure is associated with adverse health outcomes, but exposure sources in pregnancy are not well-understood.
Objectives: We examined associations between urinary OH-PAHs during pregnancy and environmental tobacco smoke (ETS) and short-term ambient air pollution exposure. Participants included 1603 pregnant non-smokers in three cohorts from 7 sites across the USA.
Background: The diagnosis of leptomeningeal metastatic disease has major prognostic and therapeutic implications. We report 13 patients with a radiologically distinct kind of focal, enhancing leptomeningeal lesion on brain MRI that mimics leptomeningeal metastatic disease.
Methods: These patients were assessed at University Health Network (Toronto, Canada) between January 2001 and December 2023.
Article Synopsis
- This study aimed to evaluate the accuracy of Beta-2 transferrin (B2Tf) gel electrophoresis in diagnosing cerebrospinal fluid (CSF) rhinorrhea among patients with unilateral thin clear rhinorrhea (UTCR), a condition that can indicate various medical issues. !* -
- Conducted from 2016 to 2024, the study involved 105 patients and showed B2Tf GE had a sensitivity of 89.5% and specificity of 78.3%, with certain causes for false results identified, such as sinusitis and contamination during sample collection. !* -
- While the findings align with previous literature on test accuracy, the study highlights the need for further research
With dairy cattle farming under pressure to lower its environmental footprint, it is important to find effective on-farm proxies for evaluation and monitoring of management practices aimed at reducing the risk of nitrogen (N) losses and optimizing N use efficiency of dairy farm systems. Urinary N (UN) is regarded as the most potent source of N emissions. In contrast to confinement systems, there have been few studies from pasture-based systems associating on-farm animal and nutritional factors with UN output.
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