. "In con-trast, in peripheral neuroblastic tumors consensuscriteria concerning methodology, evaluation of an-alytical results and data interpretation of diagnostic1p testing are well established (31, 32).FISH is a classic technique for molecular cytoge-netic testing on paraffin-embedded tissues (33).FISH is not limited by age of material and does notrequire normal autologous or pooled normal refer-e" . . .