Reverse transcriptase polymerase chain reaction for the SS18/SSX1 and SS18/SSX2 fusion genes and fluorescent in-situ hybridization for SYT rearrangement was performed.    ///    Reverse transcriptase polymerase chain reaction for the SS18/SSX1 and SS18/SSX2 fusion genes and fluorescent in-situ hybridization for SYT rearrangement was performed. 