MRI
Small ring-shaped nodule (6 mm) of the left ventricular wall protruding into the lumen of the frontal horn. It elicits an isosignal to the cortical grey matter on T1, T2, DWI/ADC and high signal FLAIR with no enhancement on post-contrast sequences.
Asymmetry of the lateral ventricles (anatomic variant).
Right cerebellar developmental venous anomaly(DVA).