Fig. 1

Preoperative computed tomography imaging with previous craniotomy evident laterally (A). The lesion exhibited isointense signal on T1W (B) and hyperintensity on T2W (C), with a central necrotic core with a dark, hypointense signal. A sponge-like lobulated well-demarcated lesion with heterogeneous enhancement was seen in T2-weighted (C) and gadolinium-enhanced T1-weighted (D) images. Computed tomography angiography prior to surgical intervention (F) revealed diminished-to-no arterial feeding (top right corner—dashed line and arrow head). Postoperative digital subtraction angiography (E) revealed a faint blushing of the left middle meningeal artery (dashed lines and arrow heads) and closure of the ipsilateral internal carotid following clipping. Contralateral and vertebral views are given below the image as reference