Case #13

CT with contrast

• Mildly hyperattenuating mass in the body of the right lateral ventricle with cystic components along its medial margin and broad contact with the septum pellucidum
• Patchy internal areas of enhancement

MRI

• Heterogeneous mass in the body of the right lateral ventricle measuring 3.8 x 3.4 x 3.8 cm with a solid component laterally and multiple cystic components medially, broadly contacting the septum pellucidum
• The solid component is isointense on T2, mildly hyperintense on FLAIR, and demonstrates diffuse restricted diffusion and mild patchy enhancement
• Associated right lateral deviation of the septum pellucidum and mass effect on the third ventricle with resultant obstructive hydrocephalus involving the lateral ventricles and anterior aspect of the third ventricle