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at 8:12 p.m. Jun, 09, 2024
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stumphickory
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darkmist
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{{c3::Aspergillus}} abscesses may show a {{c1::hypo}}intense rim on T2-weighted and gradient-echo images, reflecting hemorrhage and hemosiderin deposition, along with {{c2::peripheral}} diffusion restriction.
Personal Notes
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Missed Questions
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Core Radiology
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Fundamentals of Diagnostic Radiology
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Crack the Core
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War Machine
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Sectional Anatomy
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Additional Resources
- Irregular 17 mm left occipital lesion with surrounding vasogenic edema
- T2 hypointense rim (suggesting hemorrhage/hemosiderin), central diffusion restriction
- Vivid peripheral contrast enhancement with finger-like projections and loculation
- Slightly elevated peripheral CBV
- MRS: prominent lactate/lipid peaks (necrosis), absent choline peak
- Differential includes GBM/metastasis, but restricted diffusion and lack of choline keep abscess (e.g. Aspergillus) in consideration—especially in immunocompromised patients
- Other findings: chronic small vessel disease; possible old cortical infarct
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Section Title
Neuroimaging Brain: Brain Infection