Publications by authors named "D Lachance"

Background And Purpose: Diagnosis of tumefactive demyelination can be challenging. The diagnosis of indeterminate brain lesions on MRI often requires tissue confirmation via brain biopsy. Noninvasive methods for accurate diagnosis of tumor and non-tumor etiologies allows for tailored therapy, optimal tumor control, and a reduced risk of iatrogenic morbidity and mortality.

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  • This study focuses on the classification of glioma cases at Lagos University Teaching Hospital, utilizing the 2021 WHO brain tumor classification that combines histomorphology and molecular features, despite limited resources.
  • Of the 56 brain tumor cases examined, 52 were assessed, revealing that 35% of the initial diagnoses changed after applying the WHO criteria, with some diagnoses being upgraded and others downgraded.
  • The results emphasize the importance of molecular testing in improving brain tumor diagnoses in resource-limited settings like Nigeria and highlight the challenges faced in global health disparities in neuro-oncology.
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  • Crystal-storing histiocytosis (CSH) is a rare condition where abnormal protein crystals accumulate in the body, and when it affects the CNS, it can cause persistent imaging abnormalities.* -
  • The study describes one local case of CNS CSH alongside 10 other cases, noting that 9 had brain parenchyma involvement and some cases were linked to conditions like lymphoma.* -
  • While CNS CSH is uncommon, comprehensive evaluation for related malignancies is crucial, and treatment focuses on addressing these underlying conditions.*
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Background: Route of administration is an important component of antimicrobial stewardship. Early transition from intravenous to enteral antibiotics in hospitalized children is associated with fewer catheter-related adverse events, as well as decreased costs and length of stay. Our aim was to increase the percentage of enteral antibiotic doses for hospital medicine patients with uncomplicated common bacterial infections (community-acquired pneumonia, skin and soft tissue infection, urinary tract infection, neck infection) from 50% to 80% in 6 months.

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Measles virus (MV) vaccine strains have shown significant preclinical antitumor activity against glioblastoma (GBM), the most lethal glioma histology. In this first in human trial (NCT00390299), a carcinoembryonic antigen-expressing oncolytic measles virus derivative (MV-CEA), was administered in recurrent GBM patients either at the resection cavity (Group A), or, intratumorally on day 1, followed by a second dose administered in the resection cavity after tumor resection on day 5 (Group B). A total of 22 patients received study treatment, 9 in Group A and 13 in Group B.

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