A 37-year-old man with AIDS presents with confusion, lethargy and memory loss. CT of the brain demonstrates multiple supratentorial enhancing masses. Which imaging feature ours a diagnosis of toxoplasmosis rather than primary CNS lymphoma?
Subependymal Distribution Lesions Hyperdense On Unenhanced CT Lesion Size >3 Cm Lesions without increased tracer activity on FDG-18 PET imaging