Diferencia entre revisiones de «Ring-enhancing lesion»
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Revisión del 16:45 3 oct 2015
Background
Cerebral CT or MRI with lesions having an enhancing ring of contrast around a less dense center can indicate certain neurological infections, injuries, and indolent disorders. See DDx below. Immune status of patients is key in helping to narrow potential causative agents.
Clinical Features
Differential Diagnosis
Ring-Enhancing Lesion
Common Mnemonic: DR MAGIC
- Demyelination
- Radionecrosis/hematoma
- Metastasis
- Abscess (consider bacterial, fungal, parasitic)
- Glioma (and other primary neoplasms such as lymphoma)
- Infarction
- Contusion
HIV and ring-enhancing lesion(s)
- Toxoplasmosis v. lymphoma (see comparison of characteristics at Radiopaedia.org.)
Neoplasm
- Primary brain tumor
- Primary CNS lymphoma
- Metastatic disease
Infectious
- Pyogenic brain abscess
- Tuberculoma
- Toxoplasmosis
- Syphilis
- Neurocysticercosis
- Nocardiosis
- Cryptococcosis
- Aspergillosis
Neurologic
- Multiple Sclerosis
- Sarcoidosis
- Vasculitis
- Aneurysm
- Resolving hematoma
- Cerebral infarct
- Post-op changes