PMID- 8878285 OWN - NLM STAT- MEDLINE DCOM- 19970117 LR - 20041118 IS - 0197-3851 (Print) IS - 0197-3851 (Linking) VI - 16 IP - 8 DP - 1996 Aug TI - Partial trisomy/monosomy 6q in fetal cells and CVS long-term culture not present in CVS short-term culture. PG - 741-8 AB - A cytogenetic discrepancy in chorionic villi with implications for prenatal diagnosis is described. Chromosome analysis revealed a normal karyotype in banded metaphases from short-term culture and a chromosome count of 46 in cells of the long-term culture. After the birth of a malformed infant, a structurally aberrant chromosome 6 was found in lymphocytes and skin fibroblasts. Re-analysis of chorionic villi confirmed the result from short-term culture but disclosed the presence of the structural aberration in cells of the long-term culture. This type of inconsistency is reported for the first time and stresses the importance of a numerical and structural analysis of both short-term and long-term culture. The application of three techniques, chromosome banding, comparative genomic hybridization (CGH), and fluorescence in situ hybridization (FISH) analysis, was essential to prove that the derivative chromosome carried a combined partial trisomy/monosomy for 6q. The findings are discussed with respect to the origin of the structural aberration and to the consequences for prenatal diagnosis on chorionic villi and genetic counselling. FAU - Wegner, R D AU - Wegner RD AD - Institute of Human Genetics, Virchow Hospital, Humboldt University Berlin, Germany. FAU - Schrock, E AU - Schrock E FAU - Obladen, M AU - Obladen M FAU - Becker, R AU - Becker R FAU - Stumm, M AU - Stumm M FAU - Sperling, K AU - Sperling K LA - eng PT - Case Reports PT - Journal Article PL - England TA - Prenat Diagn JT - Prenatal diagnosis JID - 8106540 SB - IM MH - Adult MH - Cells, Cultured MH - *Chorionic Villi Sampling MH - Chromosome Banding MH - *Chromosomes, Human, Pair 6 MH - Female MH - Gestational Age MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Maternal Age MH - *Monosomy MH - Pregnancy MH - Pregnancy, High-Risk MH - Time Factors MH - *Trisomy EDAT- 1996/08/01 00:00 MHDA- 2000/06/20 09:00 CRDT- 1996/08/01 00:00 PHST- 1996/08/01 00:00 [pubmed] PHST- 2000/06/20 09:00 [medline] PHST- 1996/08/01 00:00 [entrez] AID - 10.1002/(SICI)1097-0223(199608)16:8<741::AID-PD931>3.0.CO;2-W [pii] AID - 10.1002/(SICI)1097-0223(199608)16:8<741::AID-PD931>3.0.CO;2-W [doi] PST - ppublish SO - Prenat Diagn. 1996 Aug;16(8):741-8. doi: 10.1002/(SICI)1097-0223(199608)16:8<741::AID-PD931>3.0.CO;2-W.