There is definitely problem seen in your mother's MRI
scan, th esole cause of giddiness, numbness
on body,neck, forearms shoulder etc are due to indentation (pressing) of the nerve
roots in the neck and in the brain.
These type of complains requires urgent Neurosurgical Intervention.
You are hereby requested to attend nearest neurosurgical facility as soon as possible !
hope my info helped you
Dr Hari Om Chandrakar