Second Surgery in Insular Low-Grade Gliomas

Figure 2

A case of right insular oligoastrocytoma. (a) The preoperative tumor volume computed on postcontrast T2-weighted MRI was 53 cm³ (axial slices). The green line represents the area of the tumor before the first surgery. Tumor volume was computed with OSIRIX software. (b) Postoperative tumor residue computed on T2-weighted MRI showed a tumor residual volume of 3 cm³ (axial slices). The extent of the tumor volume resection, computed on a T2-weighted MRI sequences, was 94%.

(a)

(b)