The preoperative and postoperative images of CT and MRI. (a,b) The CT images display the CSDH. The arrowheads point to the calcified membranes. (c, d) The MRI images show the GBM (G) and the CSDH (H). (e, f) The CT images indicate the in-situ hemorrhages after removal of the GBM and CSDH. (g, h) The postoperative CT images of the secondary craniotomy.