Toxoplasmosis Encephalitis Etiology: Toxoplasma gondii Imaging: brain destruction, ependymitis -> CSF flow obstruction through aqueduct -> hydrocephalus, calcifications in basal ganglia / periventricular white matter / cortex Radiology Cases of Toxoplasmosis Encephalitis Axial CT without contrast of the brain shows bilateral cortical and periventricular coarse calcifications.