The presence of the Bcl-2/IgH fusion gene in the BM samples             and paraffin-embedded LN samples from 56 patients with follicular lymphomas was             detected using FISH.     ///    "We identified the same bcl-2/IgH fusion gene in             paraffin-embedded lymph node (LN) samples and BM samples using immunohistochemistry             (IHC), immunocytochemistry (ICC), cytologic morphology and fluorescence in situ             hybridization (FISH). "    ///    "The primary lesion was also positive for the bcl-2/IgH fusion gene,             as were the BM minimal infiltrates. "    ///    Approximately 78.6% (44/56) of             the paraffin?embedded LN tissue sections that underwent FISH analysis had a bcl-2/IgH             translocation.     ///    The assessment of bcl-2/IgH translocation status may contribute             to the better detection of minimal BM infiltration by FL cells.     ///    The bcl-2/IgH rearrangement occurred in 88.6%             (39/44) of the BM specimens.     ///    The bcl-2/IgH recombination rate in stage III/IV             cancers was significantly different to that observed in stage I/II cancers (p=0.041).     ///    Bcl-2/IgH expression in minimal bone marrow infiltration by follicular             lymphoma cells.. 