Although 10% of Ewing-family tumors express the EWS-ERG fusion transcript, there have been no reports on tumors with t(21;22)(q22;q12) identified by banding cytogenetics.     ///    Reverse transcriptase-polymerase chain reaction (RT-PCR) analysis performed on the tumor and direct sequencing of the products identified the EWS-ERG fusion transcript.     ///    EWS-ERG fusion transcript produced by chromosomal insertion in a Ewing sarcoma.. 