Figure 1: (a) Contrast-enhanced CT scan of case 2 shows a ring-enhancing lesion in the right frontal lobe, in close proximity to the anterior-third of falx. There is intense perilesional edema; (b) Plain MRI scan shows a hypo-intense signal in the right frontal lobe; (c and d) Gadolinium-enhanced MR scan shows an enhancing ring lesion in the right frontal lobe; (e) MR axial section, T2-weighted scan shows an intense edema involving bilateral frontal lobes, more on the right side; (f) Excised surgical specimen of wall of the tuberculous brain abscess