Ring-enhancing lesion: Difference between revisions
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==Clinical Features== | ==Clinical Features== | ||
*Clinical presentation can vary from asymptomatic to focal neurodeficits to coma | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
Revision as of 11:42, 30 July 2016
Background
- 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
- Immune status of patients is key in helping to narrow potential causative agents
Clinical Features
- Clinical presentation can vary from asymptomatic to focal neurodeficits to coma
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