Hi,
Thank you for posting your query.
I have noted your friend's symptoms and
CT scan findings. I needed more details. If possible, please upload the CT scan report, as "black shadow" is not a technical term.
If there is an abnormality in the back of brain (
cerebellum), the possibilities include
tumor, infections and brain
stroke.
I hope my answer helps. Please get back if you have any follow up queries or if you require any additional information.
Wishing you good health,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad, India
Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar
My BLOG: http://bestneurodoctor.blogspot.in