Primary intracranial extraskeletal myxoid chondrosarcoma: A case report and review of literature

Figure 1 Preoperative and Postoperative follow-up imaging examination results. A: Computed tomography scan of the patient’s head at admission. B-F: Preoperative brain magnetic resonance imaging (MRI), B: axial view of T2-weighted image; C: axial view of T1-weighted image. D-F: Axial, sagittal and coronal view of gadolinium-injected enhancement MRI scan. G-I: Axial, sagittal, coronal view of postoperative brain gadolinium-enhanced MRI scan in 12 mo after surgery.

Figure 2 Surgical view. A: The tumor is marked by‘*’, and orange arrows show the Gray-white capsula on the surface of the tumor after dissection of the dura mater of cavernous sinus. B: Gray-red tumors contain abundant glutinous matter, and gray-white fibrous structures exist in the central area.

Figure 3 Postoperative histopathological and immunohistochemical staining images. A: Histopathological examination with hematoxylin-eosin staining (× 200). B-F: Immunohistochemical staining, B: The tumor was positive for S-100 protein; C: The tumor was positive for Vimentin; D: The tumor was negative for epithelial membrane antigen; E: The tumor was partly positive for lysozyme; F: The Ki-67 index of the tumor was low at less than 1%.