Imaging features and differences among the three primary malignant non-Wilms tumors in children

BMC Medical Imaging

Table 1 Demographic characteristics of the NWTs patient cohort at presentation

Parameter	CCSK	MRTK	RCC	P values	P values	P values	P values
Parameter	(n = 22)	(n = 27)	(n = 16)		C vs. M	C vs. R	M vs. R
Sex (M/F)	14/8 (1.75:1)	16/11 (1.45:1)	7/9 (0.78:1)	0.450	0.754	0.223	0.324
Age range (years)	0.6–10	0.3–6.2	2.9–14.6	< 0.001	0.012	< 0.001	< 0.001
Median age (years)	2.55	1.2	11.35
Age group (years)
< 1	4.5% (1/22)	44.4% (12/27)	0	< 0.001	0.002	0.291	< 0.001
1–4	77.4% (17/22)	51.9% (14/27)	12.5% (2/16)	< 0.001	0.066	< 0.001	0.010
5–9	13.6% (3/22)	3.7% (1/27)	25.0% (4/16)	0.118	0.460	0.375	0.107
10–14	4.5% (1/22)	0	62.5% (10/16)	< 0.001	0.202	< 0.001	< 0.001

P values indicates whether the difference between the three groups of tumors is statistically significant. C, CCSK; M, MRTK; R, RCC

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