Fig. 3
From: Neurosurgical emergencies in spinal tumors: pathophysiology and clinical management
Intradural-extramedullary metastatic tumor causing Bilsky grade 2 cervical spinal cord compression. This patient with a history of BRAF wildtype melanoma presented with a large C1 metastasis (yellow arrow) and subsequent clinical signs of subtle myelopathy and radiographic compression of the upper cervical spinal cord with cord edema (white arrow). Axial (A) and sagittal (B) MRI (T1-weighted, post-contrast) showing an enhancing irregular intradural extramedullary mass in the left side of the posterior spinal canal at C1 measuring 2.3 (CC) × 1.6 (transverse) × 2.5 cm (AP). The lesion appears hyperintense compared to the spinal cord on T2-weighted sagittal MRI (C, D)