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Answers:
1. Ventricular walls
3. Right frontal lobe
4. Left frontal lobe
Additional Images:
Subcortical lesions, right calcified, left uncalcified. CT of the Brain:

Additional imaging reveals a mass in the region of the Foramen of Monro. MR with contrast (T1):

MRI with Contrast (T2):

Subcortical lesions. MRI with Contrast (T2):

Subependymal nodules. MRI with Contrast (T2):
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