PMID- 11908728 OWN - NLM STAT- MEDLINE DCOM- 20030729 LR - 20190116 IS - 1042-8194 (Print) IS - 1026-8022 (Linking) VI - 43 IP - 1 DP - 2002 Jan TI - Simultaneous occurrence of myelodysplastic syndrome and monoclonal B lymphocytes with a different clonal origin. PG - 191-3 AB - Bone marrow and peripheral blood from a myelodysplastic syndrome patient with trisomy 13 and monoclonal B lymphocytes (without evidence of systemic lymphoma) were investigated for clonal lymphoid lineage involvement using interphase fluorescence in situ hybridization (FISH) and X-chromosome inactivation assay (HUMARA) on CD19+ and CD34+ sorted cells. Trisomy 13 was detected in 55% of CD34+ cells and in 5.5% of CD19+ cells, the latter being comparable to the negative control specimen. X-chromosome inactivation showed both CD34+ and CD19+ cells to be monoclonal, though their inactivated X-chromosome was different. The results strongly suggested that both populations of CD34+ and CD19+ cells have originated from a different progenitor stem cell. FAU - Cauwelier, B AU - Cauwelier B AD - Laboratory of Haematology, AZ St. Jan AV, Bruges, Belgium. FAU - Nollet, F AU - Nollet F FAU - De Laere, E AU - De Laere E FAU - Van Leeuwen, M AU - Van Leeuwen M FAU - Billiet, J AU - Billiet J FAU - Criel, A AU - Criel A FAU - Louwagie, A AU - Louwagie A LA - eng PT - Case Reports PT - Journal Article PL - United States TA - Leuk Lymphoma JT - Leukemia & lymphoma JID - 9007422 SB - IM MH - Aged MH - B-Lymphocytes/*pathology MH - Cell Lineage MH - Cell Transformation, Neoplastic/*pathology MH - Chromosomes, Human, Pair 13 MH - Clone Cells/pathology MH - Cytogenetic Analysis MH - Female MH - Flow Cytometry MH - Humans MH - Myelodysplastic Syndromes/*pathology MH - Trisomy EDAT- 2002/03/23 10:00 MHDA- 2003/07/30 05:00 CRDT- 2002/03/23 10:00 PHST- 2002/03/23 10:00 [pubmed] PHST- 2003/07/30 05:00 [medline] PHST- 2002/03/23 10:00 [entrez] AID - 10.1080/10428190210205 [doi] PST - ppublish SO - Leuk Lymphoma. 2002 Jan;43(1):191-3. doi: 10.1080/10428190210205.