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Table 1 Changes and additions to morphology codes for intracranial and intraspinal tumours between ICD-O-1 (1976) [14], ICD-O-2 (1990) [15] and ICD-O-3 (2000) [16]. Changes to behaviour code are in bold italics. ICCC-3: category in International Classification of Childhood Cancer, Third Edition [6]

From: Incidence of childhood CNS tumours in Britain and variation in rates by definition of malignant behaviour: population-based study

Entity ICD-O-1 ICD-O-2 ICD-O-3 ICCC-3
Papillary ependymoma 9393/1 9393/1 9393/3 IIIa.1
Pilocytic astrocytoma 9421/3 9421/3 9421/1 IIIb
Spongioblastoma, NOS 9422/3 9422/3 9421/1 IIIb
Pleomorphic xanthoastrocytoma 9424/3 9424/3 IIIb
Gliofibroma 9442/1 IIIb
Large cell medulloblastoma 9474/3 IIIc.1
Primitive neuroectodermal tumour, NOS (now Embryonal CNS tumour, NOS) 9473/3 9473/3 IIIc.2
Atypical teratoid/rhabdoid tumour 8963/3 9508/3 IIIc.4
Chordoid glioma 9444/1 IIId.3
Prolactinoma 8271/0 8271/0 IIIe.1
Pituitary adenoma, NOS 8140/0 8140/0 8272/0 IIIe.1
Pituitary carcinoma, NOS 8010/3 8010/3 8272/3 IIIe.1
Adamantinomatous craniopharyngioma 9351/1 IIIe.2
Papillary craniopharyngioma 9352/1 IIIe.2
Granular cell tumour of the sellar region 9580/0 9580/0 9582/0 IIIe.2
Desmoplastic infantile astrocytoma 9412/1 IIIe.4
Dysembryoplastic neuroepithelial tumour 9413/0 IIIe.4
Gangliocytoma 9490/0 9492/0 IIIe.4
Dysplastic gangliocytoma of cerebellum 9493/0 IIIe.4
Anaplastic ganglioglioma 9505/3 IIIe.4
Clear cell meningioma    9538/1 IIIe.5
Papillary meningioma 9538/1 9538/1 9538/3 IIIe.5