Left: axial T2WI shows bilateral patchy peripheral hyperintensities. Note the
small hypointense nodule abutting the lateral wall of the posterior horn of the
right lateral ventricle.
Right: axial T2WI superior to left shows left parietal hypointense mass without
significant mass effect. Note again the peripheral patchy hyperintensities.
Left: axial T1WI with gadolinium shows that the left parietal lesion is hyperintense.
The patchy peripheral lesions are non-enhancing and hypointense.
Right: axial non-enhanced CT image shows focal area of calcific density in the
left frontal-parietal region. Patchy low-density areas are seen bilaterally.
Left: axial T1WI with gadolinium shows the hyperintense right lateral
ventricular subependymal nodule. The cortical lesions do not enhance.
Right: axial non-enhanced CT image shows bilateral high-density
Coronal plain scan (upper Rt) & Gd-enhanced axial and coronal T1WI's show
several enhancing subependymal nodules around the foramina of Monroe.
Key words: mri congenital developmental phakomatoses