Fig. 2

A Preoperative diffusion restriction seen(yellow arrow) on diffusion-weighted MRI, B1000. B Preoperative diffusion restriction and vasogenic edema(red arrow) on diffusion-weighted MRI, ADC. C Preoperative T2-weighted MRI axial section, the lesion with surrounding vasogenic edema(red arrow). D Preoperative T1-weighted MRI axial section, the abscess formation with peripheral contrast enhancement. E Postoperative T2-weighted MRI axial section, reduced vasogenic edema compared to before (red arrow), space filled with cerebrospinal fluid remaining after surgery (yellow arrow). F Postoperative T1-weighted contrast-enhanced MRI axial section, without contrast enhancement