Fig. 7
From: Classification and microsurgical treatment of foramen magnum meningioma
Comparison of preoperative and postoperative images of the FMM, which is located ahead of the brainstem and in the mix of vertebral artery. a–c Preoperative axial, sagittal, and coronal T1-weighted contrast enhanced. d Preoperative 3DCTA and tumor image reconstruction. e–f Preoperative right and left vertebral artery 3DCTA image reconstruction. g–i Postoperative axial, sagittal and coronal T1-weighted contrast enhanced. j Preoperative tumor, brainstem, nerves, and blood vessels under a microscope. k Postoperative tumor bed, brainstem, nerves, and blood vessels under a microscope. 1, tumor; 2, vertebral artery; 3, PICA; 4, cerebellum; 5, brainstem; 6, tumor bed