Intramedullary lesion at spinal C7. -?

Paralysis of hands wrist and leg mostly left side. MRI report says, "Evidence of ill defined heterogeneous altered signal intensity intramedullary lesion noted at spinal cord C7, D1 level appear heterogeneously hyper mixed with few hypointense areas which appear iso to spinal cord on T1 and T2w images, On post contrast study the lesion shows patchy irregular peripheral enhancement. The lesion measures 40 mms craniocaudally, 10mms anterioposterioly and 14 mms transversely in size. Few irregular hypointensities noted in the lesion on gradient images -? haemorrhagic product/calcification. multisegmental CSF signal intensity area noted involving cervical and upper dorsal spinal cord extending from C1 to D4-5 level appear hyper on T2 and hypo on T1 images suggest syrinx.