The predominantly cystic lesion within the posterior aspect of the right temporal lobe along the cortical margin of the middle temporal gyrus measures approximately 11 x 12 mm. A small enhancing anterior mural nodule is demonstrated.
No surrounding vasogenic oedema. No increase in regional perfusion (not shown). The MRS is non-specific (not shown). The remainder of the brain is unremarkable.
Conclusion:
The differential diagnosis of the isolated right temporal lobe lesion is that of a ganglioglioma or pleomorphic xanthoastrocytoma, DNET and low grade glioma.