Case #34

CT

• Hypoattenuating mass in the medial right temporal lobe, which bulges inferiorly through the tentorial notch
• No corresponding calcification

MRI

• Lobular T1 hypointense, T2 hyperintense mass centered in the medial right temporal lobe (with involvement of the hippocampus and parahippocampal gyrus) measuring 4.5 x 4.3 x 3 cm
• The mass bulges inferiorly through the tentorial notch and contacts the superior margin of the cerebellum
• Incomplete internal signal suppression on FLAIR
• No corresponding restricted diffusion or enhancement
• No surrounding parenchymal edema
• Associated local mass effect without evidence for hydrocephalus
• 1.4 cm pineal cyst