Background And Purpose: Hyperintensity on T1-weighted imaging in perilesional vasogenic edema has been reported as a useful sign for differentiating cavernous malformation from other hemorrhagic intra-axial masses. In this study, we investigated the frequency of perilesional hyperintensity on T1-weighted imaging in patients with intra-axial hemorrhagic and nonhemorrhagic brain masses.
Methods: The study was performed with the approval of the institutional review board. Magnetic resonance images of 218 patients with 282 intra-axial brain masses (129 metastases, 46 gliomas, 18 primary central nervous system lymphomas [PCNSLs], 25 intracerebral hemorrhages, 50 cavernous malformations, and 14 patients with brain abscesses) were evaluated. The signal intensity in perilesional area was qualitatively evaluated on T1-weighted sequences. In addition, signal intensity in perilesional area was quantitatively measured on T1-weighted sequences and normalized to the contralateral white matter.
Results: Hyperintensity on T1-weighted imaging in perilesional vasogenic edema was found in 12 (9%) of 129 metastases, 8 (16%) of 50 cavernous malformations, 1 (4%) in 25 nonneoplastic intracerebral hemorrhages, and none of the patients with high-grade glioma, PCNSL, or abscess. All of the lesions with perilesional hyperintensity showed either acute or subacute hemorrhage. Pairwise comparison of qualitative hyperintensity on T1-weighted imaging demonstrated no significant difference between the groups. Perilesional hyperintensity on T1-weighted imaging showed high specificity in both metastasis and cavernous malformation groups (94%).
Conclusion: Perilesional hyperintensity on T1-weighted imaging is not limited to cavernous malformations and frequently evident with melanoma and other hemorrhagic metastasis to the brain. In our experience, it was not seen in high-grade glioma, PCNSL, and brain abscess.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/jon.12424 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chronic pain as a presenting feature of dysferlinopathy.
Neuromuscul Disord
December 2024
Service de Neuromyologie, Centre de référence des maladies neuromusculaires Nord/Est/Ile de France Institut de Myologie, Sorbonne Université, APHP, Paris, France. Electronic address:
Dysferlinopathies, caused by mutations in the dysferlin gene (DYSF) encoding the dysferlin protein, are a clinically heterogeneous group of autosomal recessive muscular dystrophies whose phenotypic spectrum is still evolving. Here we described a patient reporting diffuse muscular pain non related to physical exercise, mimicking fibromyalgic syndrome. Electroneuromyography was normal.
View Article and Find Full Text PDFStandardisation of the radiological definition of supramaximal resection in glioblastoma.
J Clin Neurosci
January 2025
Department of Neurosurgery, The Royal Melbourne Hospital, Victoria, Australia; Department of Surgery, The University of Melbourne, Victoria, Australia. Electronic address:
Glioblastoma remains the most common and lethal primary malignant brain tumour, with high rates of recurrence and progression despite gross-total resection of the contrast-enhancing region based on T1-weighted MRI. There has been growing interest in exploring "supramaximal" resections that extend beyond contrast-enhancing borders, with initial retrospective data suggesting survival benefit, but there is currently no consensus definition. In this systematic review, we explore the evolution of supramaximal resection in glioblastoma, dissect the incongruencies in the literature regarding its definition, qualitatively appraise each definition and discuss the results of various studies that have explored its impacts on patient outcomes.
View Article and Find Full Text PDFAssociations of Central Arterial Stiffness With Brain White Matter Integrity and Gray Matter Volume in MRI Across the Adult Lifespan.
J Magn Reson Imaging
January 2025
Department of Neurology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Background: Central arterial stiffening is associated with brain white matter (WM) damage and gray matter (GM) volume loss in older adults, but little is known about this association from an adult lifespan perspective.
Purpose: To investigate the associations of central arterial stiffness with WM microstructural organization, WM lesion load, cortical thickness, and GM volume in healthy adults across the lifespan.
Study Type: This is a cross-sectional study.
Clinical and magnetic resonance imaging findings of presumed limber tail syndrome in a cat.
Can Vet J
January 2025
Neurology Unit, Centre Hospitalier Vétérinaire Anicura Pommery, 226 Boulevard Pommery, 51100 Reims, France.
A 4-year-old neutered female domestic shorthair indoor cat was presented with sudden onset of abnormal and painful tail-carriage. The tail was held horizontally for the first centimeters from the base and a flaccid paralysis was evident more distally. Magnetic resonance imaging of the lumbosacral spine and tail revealed a lesion located in the right and muscles along the 1st coccygeal vertebrae.
View Article and Find Full Text PDFBosniak Classification of Cystic Renal Masses Version 2019: Proportion of Malignancy by Class and Subclass-Systematic Review and Meta-Analysis.
AJR Am J Roentgenol
January 2025
Associate Professor, University of Ottawa Department of Radiology. Clinical Epidemiology Program, Ottawa Hospital Research Institute. Room c159 Ottawa Hospital Civic Campus, 1053 Carling Ave. Ottawa, ON, K1Y 4E9.
Bosniak classification version 2019 (v2019) was a major revision to version 2005 (v2005) that defined cystic renal mass subclasses based on wall or septa features. To determine the proportion of malignancy within cystic renal masses stratified by Bosniak classification v2019 class and feature-based subclass. MEDLINE and EMBASE databases were searched on July 24, 2023 for studies published in 2019 or later that reported cystic renal masses that underwent renal-mass CT or MRI, were assessed using Bosniak v2019, and had a reference standard (histopathology indicating benignity or malignancy or ≥5-year imaging follow-up indicating benignity).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!