MCQ Radiology Answer 06
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The Correct Answer is A
Explanation:
Demyelination and gliosis in HIV encephalitis affects deep white matter, preferentially involving the centrum semiovale. CMV cause meningoencephalitis with predominant involvement of periventricular white matter and brain stem, ventriculitis, infarcts, spinal cord, cranial nerves. CT may show diffuse white matter hypodensity and on contrast, may show ependymal, ring or nodular enhancement. Periventricular calcification is a sign of congenital CMV infection and not a feature of CMV infection in immunocompromised. Cryptococcus is the most common fungal infection in AIDS and typically causes meningitis. PML is caused by Gr B papovavirus and shows bilateral pathy white matter abnormality without mass effect or contrast enhancement.
Reference:Offiah et al. The imaging appearances of intracranial CNS infections in adult HIV and AIDS patients. Clinical Radiology (2006) 61: 393-401Tags: MCQ, Radiology, HIV Encephalitis
Category: Radiology MCQs
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