Legend T1(left image) and multiple T2-weighted sagittal and axial images of the thoracic spine show a heterogeneous mass involving the entire length of the spinal cord. The lesion exhibits prolongation of both T1 and T2 relaxation times. Both solid and cystic component are present at the level of the conus, but superiorly, multiple cystic components expand the cord and thin the cord parenchyma.

Legend Sagittal (left) and axial (right) postcontrast T1WIs show enhancement of the heterogeneous conus lesion. The more proximal and cystic aspect does not enhance. Key words: tumor neoplasia intramedullary mri spinal cord syrinx syringohydromyelia

Spine Diagnosis: Pilocytic astrocytoma