Age distribution of renal tumours in children
| Age group range | Renal tumours to be expected |
| <1 year | Congenital mesoblastic nephroma |
| Wilms’ tumour | |
| Rhabdoid tumour | |
| 1–4 years | Wilms’ tumour |
| Rhabdoid tumour of kidney | |
| Clear cell sarcoma | |
| >4–5 years | Wilms’ tumour |
| >5–10 years | Wilms’ tumour |
| Clear cell sarcoma | |
| Renal cell carcinoma | |
| >10–19 years | Renal cell carcinoma |
| Primitive neuroectodermal tumour/Ewing sarcoma |