Fig. 5

“An 11-year-old female patient” MRI exam revealed a poorly defined lesions at the Lt. high parietal region that exhibit hypointense signal at T1 (a) and hyperintense signals with surrounding hypointense rim at T2 and FLAIR (b, c) and minimal perifocal edema. DWI and ADC map (d, e) showed mixed diffusion changes (restriction/T2 shin effect) with high ADC value. Post Gad (f) showed marginal ring contrast enhancement. MRS (g, h) revealed no significant changes either of NAA, Cr, or Cho peaks with presence of AA “glycine (Gly) at 3.56 ppm; succinate (S) at 2.4 ppm; lipid/lactate (Lip/L) at 1.3 ppm at short MRS. Also, there is a well-defined abnormal signal intensity area seen at the Rt. frontal region (not included in selected images). MRI diagnosis: inflammatory process with Rt. parietal pyogenic brain abscess that proved on surgical aspiration of pus contents