PMID- 15966044 OWN - NLM STAT- MEDLINE DCOM- 20051007 LR - 20061115 IS - 0197-3851 (Print) IS - 0197-3851 (Linking) VI - 25 IP - 6 DP - 2005 Jun TI - Prenatal diagnosis and molecular cytogenetic analysis of partial monosomy 10q (10q25.3-->qter) and partial trisomy 18q (18q23-->qter) in a fetus associated with cystic hygroma and ambiguous genitalia. PG - 492-6 AB - OBJECTIVES: To present the prenatal diagnosis and molecular cytogenetic analysis of a fetus with nuchal cystic hygroma and ambiguous genitalia. CASE AND METHODS: Amniocentesis was performed at 16 weeks' gestation because of the abnormal fetal sonographic finding of a large septated nuchal cystic hygroma. Genetic amniocentesis revealed a terminal deletion in the long arm of chromosome 10. The paternal karyotype was subsequently found to be 46,XY,t(10;18)(q25.3;q23). The maternal karyotype was normal. The pregnancy was terminated. A hydropic fetus was delivered with a septated nuchal cystic hygroma and ambiguous genitalia. Fluorescence in situ hybridization (FISH), microarray-based comparative genomic hybridization (CGH), and polymorphic DNA markers were used to investigate the involved chromosomal segments. RESULTS: FISH study showed absence of the 10q telomeric probe and presence of the 18q telomeric probe in the derivative chromosome 10. Microarray-based CGH analysis showed loss of distal 10q and gain of distal 18q. Polymorphic DNA marker analysis determined the breakpoints. The fetal karyotype was 46,XY,der(10)t(10;18)(q25.3;q23)pat. The chromosome aberration resulted in partial monosomy 10q (10q25.3-->qter) and partial trisomy 18q (18q23-->qter). CONCLUSIONS: The present case provides evidence that partial monosomy 10q (10q25.3-->qter) with partial trisomy 18q (18q23-->qter) can be a genetic cause of fetal cystic hygroma and ambiguous genitalia. Cytogenetic analysis for prenatally detected structural abnormalities may detect unexpected inherited chromosome aberrations. FAU - Chen, Chih-Ping AU - Chen CP AD - Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China. cpc_mmh@yahoo.com FAU - Chern, Schu-Rern AU - Chern SR FAU - Wang, Tzu-Hao AU - Wang TH FAU - Hsueh, Ding-Wei AU - Hsueh DW FAU - Lee, Chen-Chi AU - Lee CC FAU - Town, Dai-Dyi AU - Town DD FAU - Wang, Wayseen AU - Wang W FAU - Ko, Tsang-Ming AU - Ko TM LA - eng PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Prenat Diagn JT - Prenatal diagnosis JID - 8106540 SB - IM MH - Adult MH - Chromosomes, Human, Pair 10/*genetics MH - Chromosomes, Human, Pair 18/*genetics MH - Cytogenetic Analysis MH - Female MH - Genitalia/*abnormalities MH - Humans MH - In Situ Hybridization, Fluorescence MH - Karyotyping MH - Lymphangioma, Cystic/*genetics MH - Monosomy/*diagnosis MH - Pregnancy MH - Prenatal Diagnosis MH - Trisomy/*diagnosis EDAT- 2005/06/21 09:00 MHDA- 2005/10/08 09:00 CRDT- 2005/06/21 09:00 PHST- 2005/06/21 09:00 [pubmed] PHST- 2005/10/08 09:00 [medline] PHST- 2005/06/21 09:00 [entrez] AID - 10.1002/pd.1179 [doi] PST - ppublish SO - Prenat Diagn. 2005 Jun;25(6):492-6. doi: 10.1002/pd.1179.