the 688 cases included 216 leukemias , 131 tumors of the central nervous system , 40 neuroblastomas , 82 lymphomas ( including 34 cases of hodgkin 's disease ) , 46 nephroblastomas , 32 soft-tissue sarcomas , 29 bone sarcomas ( including 5 cases of ewing 's disease ) , 25 retinoblastomas , 12 thyroid tumors , 10 extragenital teratomas , 5 ovarian dysgerminomas , 4 tumours of the testes , 4 hepatoblastomas and 52 other tumours ( table 2 ) .
C0024299
lymphomas
C0019829
hodgkin 's disease