How worried should I be?

I was having weakness in my hands and was sent to a nerve specialist. He tested me for some things that came out negative so he went on to order an MRI of my spine and brain. The one of my brain came back as follows

Impression: 2.0 x 1.2 x 2.0 cm nonenhancing mass in the suprasellar cistern which appears to be separate from the pituitary gland, optic chiasm and hypothalamus as well as the internal carotid artery. The differential includes craniopharyngioma and epidermoid cyst. Less likely is a cystic glioma or cystic astrocytoma. CT scan of the sella turcica would be of benefit in further characterizing this lesion as the presence of calcifications or fat within the lesion may distinguish it as being a craniopharyngioma or epidermoid cyst.

How worried should I be? Is that big for being in the brain?  Doctor is sending me to a neurosurgeon, but has no clue how long it will take to get in there. I would really appreciate ANY advice at all...since I totally lost at this point.

Thanks,
Stephanie