Table 1.

Histopathological classification of childhood medulloblastomas. GNB = ganglioneuroblastoma; LC/A = large cell/anaplastic; MBEN = medulloblastoma with extensive nodularity; N/D = nodular/desmoplastic. The gray hatching encompasses tumors with an anaplastic phenotype.

Main category		Sub‐category		Variant		Sub‐variant
Non‐desmoplastic	299 (95%)	Non‐nodular	280 (89%)	Classic	225 (71%)
				GNB	3 (1%)	GNB classic	2 (<1%)
						GNB anaplastic	1 (<1%)
				LC/A	52 (17%)	Large cell	5 (2%)
						Anaplastic	47 (15%)
		Nodular	19 (6%)	Biphasic (nodular/non‐desmoplastic)	19 (6%)	Biphasic anaplastic	3 (1%)
						Biphasic classic	16 (5%)
Desmoplastic	16 (5%)	Nodular	16 (5%)	N/D	14 (4%)	Typical N/D	11 (3%)
						Paucinodular N/D	3 (1%)
				MBEN	2 (<1%)