Leptomeningeal cysts of the brain simulating tumor.
D001099:Arachnoid; D001927:Brain Diseases / Q000175:diagnosis*; D001932:Brain Neoplasms / Q000175:diagnosis; D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008875:Middle Aged; D010841:Pia Mater