Imaging Aspects of Cerebral Toxoplasmosis in Immunocompromised Patients

Abstract

<jats:p>This is the first hypothesis to be raised, especially if the patient is not taking prophylactic treatment. Lesions are generally multiple, localized in the grey nuclei and cortico-subcortical regions (hematogenous dissemination), and may bleed spontaneously. The mass effect associated with peri lesional edema is often major, even if the lesion is small. Contrast is often annular, with the center of the lesion in hypersignal or T2 hyposignal, often remaining in diffusion hyposignal. After treatment, a scar in the form of a small, stable annular contrast pattern may persist for years.</jats:p>