Cyst in spine. Is it risky.

Sir in MRI scan it is reported a 1.5 craniocaudal 0.5 anteroposterior well defined ovoid T1W hypointense T2W STIR hyperintense centrally located intramedullary lesion noted in cervical cord at the level of C3 vertebra causing mild expansion of the cord.mild nodularity of wall of the lesion noted on T1W of images.there is no adjacent syrinx / perilesional edema.no hemorrhagic components.following intravaneous contrast administration there is no significant enhancement in lesion .rest of cord appears normal.. Doc said nothing emergency no medication required as of now.just lets do regular followup is required... Sir my question is if there is any increase in size of that lesion in further followup scans is it curable with medicines or any surgery required...is it risky...sir pls suggest me i m very much tensed about this...my husband feeling very nervous regarding this..i m attaching xray films along with this question kindly see the attachment..