Vols. Videos

Subependymoma

Last Updated: October 1, 2018

Figure 1: This small FLAIR-hyperintense (left) intraventricular nodule represents subependymoma, a fairly common and benign tumor. Enhancement is variable, but this example has no significant enhancement on postcontrast T1WI (right).

 

Figure 2: Often nearly invisible on CT (top row left), subependymomas are intraventricular tumors that are usually much more evident on FLAIR (top row right). This left frontal horn subependymoma demonstrated no appreciable enhancement on postcontrast T1WI (bottom).

 

Figure 3: Axial non-contrast head CT demonstrates a calcified lesion in the 4th ventricle. Sagittal FLAIR (top row right), axial T1 without contrast (second row left), axial T1 post-contrast (second row right), DWI (third row left), ADC (third row right), and axial T2FS (bottom row) i...