Table 1 Characteristics of the 10 patients who had been treated previously for a giant cell astrocytoma (GCA)

Patient	Age atpresentation (years)	Sex	IQ	Symptoms atpresentation with GCA
1	19*	F	Normal	ICP
2	37*	F	Normal	ICP
3	13*	F	Normal	ICP
4	14	M	LD	Deterioration in behaviour
5	18*	M	Normal	ICP
6	41	F	Normal	ICP
7	15	M	LD	Blind from ICP
8	19	F	Normal	Not known
9	17*	F	Normal	ICP
10	10	M	LD	Deterioration in behaviour

*Tuberous sclerosis diagnosed because of the presentation with a GCA.
F, female; ICP, classic symptoms of raised intracranial pressure (ie, headache, vomiting, papilloedema); LD, learning difficulty (ie, IQ<70); M, male; Normal, IQ within the normal range (ie, >70).