What is the typical signal intensity of these lesions?
Largely follows grey matter, although they are usually somewhat hyperintense to grey matter on T2 weighted images. They do not enhance.
How are these lesions treated?
Children with central precocious puberty can be treated medically. Intractable epilepsy can respond to surgery (resection or disconnection, depending on the morphology of the tumour) and this can be performed via an open craniotomy or more recently via an endoscope.
A rounded mass in the region of the hypothalamus (orange arrows), projecting inferiorly, behind the infundibulum of the pituitary gland (green arrow). It is isointense to grey matter on T1 weighted images, does not enhance and is somewhat hyperintense of T2 weighted images.