BCL1-IgH rearrangement was only seen in 1/62 (2%) of cases overall and in none of the t(11;14) cases, which demonstrated FISH breakpoints both centromeric and telomeric to the BCL1/MTC, suggesting that, if genomic clustering exists in t(11;14) SLVL, it differs from MCL.     ///    " In order to characterize the genetic diversity in splenic lymphoma with villous lymphocytes (SLVL), we have undertaken cytogenetic and molecular analyses of CCND1 expression and BCL1-IgH PCR rearrangement in 76 cases diagnosed predominantly on morphological criteria. "