<prompt> All of the following are small round blue cell tumours exceptEwings sarcomaWilms tumourRetinoblastomaRhabdomyosarcoma  <response>: Small round blue cell tumours.Neuroblastoma.Ewings sarcoma.Wilms tumour.Medulloblastoma.Retinoblastoma.Lymphoma.Primitive Neuroectodermal tumour. 