case_images: PMC5841062_01
case_images: (a) T2 sequence demonstrating "concentric" target sign with concentric alternating hypointense and hyperintense rims. (b) Postcontrast sequence demonstrating "eccentric" target sign with a peripheral rim of enhancement and focal left lateral eccentric enhancing nodule.
case_images: CRINM2018-9876514.001.jpg
case_images: PMC5841062_01_CRINM2018-9876514.001.jpg
case_images: fig1
case_images: T2 hypointense and hyperintense rims (Figure 1(a)) and postcontrast focal eccentric enhancing nodule that measured 1 cm (Figure 1(b)). These are considered both the "concentric" and "eccentric" target signs, which demonstrate specificity in the setting of cerebral toxoplasmosis.
case_images: (a) Toxoplasma cyst demonstrated on H and E stain x40. (b) Toxoplasma cyst confirmed on immunocytochemistry x40.
case_images: CRINM2018-9876514.002.jpg
case_images: PMC5841062_01_CRINM2018-9876514.002.jpg
case_images: fig2
case_images: Biopsy of the lesion was performed and histopathological analysis confirmed toxoplasma cysts (Figure 2(a)) confirmed on immunohistochemistry (Figure 2(b)).