Presentation
Chronic headaches.
Patient Data
Multiple small ring-shaped nodules along the ventricular wall, isointense on T1, T2 and DWI and high signal FLAIR with no enhancement on post-contrast sequences.
Case Discussion
MRI features suggestive of ring-shaped lateral ventricular nodules (RSLVNs), incidental findings.
The RSLVNs are considered benign lesions (leave me alone lesions), usually asymptomatic and discovered incidentally during an MRI exam. The exact nature of these lesions remains unknown due to a lack of studies with pathological confirmation (glioependymal cyst, neuroglial cyst, variants of subependymoma, others).
The main differential diagnosis includes:
subependymal heterotopia: usually in patients with epilepsy
subependymal nodules: patients with tuberous sclerosis