Table 2.

Proposed protocols for surveillance imaging in children with ependymoma, medulloblastoma and pilocytic astrocytoma

Tumour	Timing of postoperative imaging	Frequency of study
		Macroscopically complete excision		Incomplete excision
		Cranial study	Spinal study	Cranial study	Spinal study
Ependymoma	24–48 h	First	None	First	None
	1st year	3–6 months	6 months	3 months	3–6 months
	2nd–5th years	6 months	6–12 months	6 months	6–12 months
Medulloblastomaa	24–48 h	First	None	First	None
	1st year	3–4 months	3–4 months	3–4 months	3–4 months
	2nd–6th year	6–8 months	6–8 months	6–8 months	6–8 months
Cerebellar low-grade astrocytomab	24–48 h	First	None	First	None
	1st year	6 months	None	6 months	None
	2nd year	At 24 months	None	6 months	None
	3rd year	At 3.5 years	None	6 months	None
	4–5th year	At 5 years	None	1 year	None
	6th year onwards	None	None	2 years	None

^aAll imaging studies in children with medulloblastoma should include the entire neuroaxis.

^bThe surveillance imaging protocol following complete resection should be applied to children who have radiotherapy with the postoperative scan omitted