Multimedia
 | Media file 1: Immunohistochemical or immunofluorescent techniques can detect the Toxoplasma gondii parasite. |
 | Media file 2: T1-weighted axial brain magnetic resonance image at the level of the basal ganglia in a 24-year-old man with human immunodeficiency virus infection. The image shows hypointense lesions in the region of the thalami (arrows) caused by toxoplasmosis. |
 | Media file 3: T1-weighted axial brain magnetic resonance image at the level of the upper lateral ventricles in a 24-year-old man with human immunodeficiency virus infection (same patient as in Images 2, 4, and 5). The image shows a hypointense mass compressing the right lateral ventricle (arrow) . |
 | Media file 4: Transaxial contrast-enhanced computed tomography scan in a 24-year-old man with human immunodeficiency virus infection and central nervous system toxoplasmosis (same patient as in Images 2-3 and 5). This image was obtained after the patient received 20 days of treatment, with resultant clinical improvement, and shows a low-attenuating mass with minor peripheral ring enhancement. Note the reduction in the mass effect. |
 | Media file 5: T2-weighted coronal magnetic resonance image at the level of the insulae in a patient with human immunodeficiency virus infection and central nervous system toxoplasmosis (same patient as in Images 2-4). The image shows large, bilateral hyperintense lesions (almost symmetrically placed on either side of the third ventricle and/or lateral ventricle) (arrows). Note the slight mass effect on the right lateral ventricle (V). |
 | Media file 6: T1-weighted gadolinium-enhanced magnetic resonance image at the level of the fourth ventricle in a 32-year-old patient with human immunodeficiency virus infection. The image shows a peripheral, right frontoparietal ring-enhancing lesion (arrows). The patient presented with a solitary space-occupying lesion, which was confirmed to be secondary to toxoplasmosis. |
 | Media file 7: T1-weighted axial gadolinium-enhanced magnetic resonance image at the level of the basal ganglia in a 37-year-old patient with human immunodeficiency virus infection. The image shows 2 complex, ring-enhancing lesions in the basal ganglia on the right, surrounded by notable white matter edema. Additional lesions were noted elsewhere in the brain. This appearance is typical of central nervous system toxoplasmosis, which has the propensity to involve the basal ganglia. |
 | Media file 8: T1-weighted axial gadolinium-enhanced magnetic resonance images at 2 levels through the basal ganglia (same patient as in Image 7). These images show 2 complex, ring-enhancing lesions in the basal ganglia on the right, with surrounding notable white matter edema. This appearance is typical of central nervous system toxoplasmosis, which has the propensity for involvement of the basal ganglia. |
 | Media file 9: Nonenhanced T1-weighted images in a patient infected with human immunodeficiency virus and cerebral toxoplasmosis. These images show hypointense, asymmetrical, bilateral periventricular/basal ganglial lesions. |
 | Media file 10: Axial fluid-attenuated, inversion recovery brain magnetic resonance image (same patient as in Image 9). These images show intense signal at the sites of the infection. |
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Further Reading
Keywords
Toxoplasma gondii, T gondii, protozoal infection, parasitic infection, congenital toxoplasmosis, undercooked pork, undercooked lamb, raw meat, disseminated toxoplasmosis, acute toxoplasmosis, central nervous system toxoplasmosis, CNS toxoplasmosis, CNST
