<prompt> Spontaneously regressing tumours areMalignant melanomaNeuroblastomaEwings sarcomaWilms tumour  <response>: Tumors with spontaneous regression Neuroblastoma Choriocarcinoma Renal cell carcinoma Malignant melanoma Retinoblastoma Ref : Robbins 9th edition Pgno : 477, 1041, 955, 1339, 1149 