Ulus Travma Acil Cerrahi Derg. 2014; 1(2): 101-103 | DOI: 10.4274/jpr.84429 | |||
Prenatal Diagnosis of Fetal Unbalanced 47,XY, t(2;18) (p21;q23),+18 Karyotype Due to Maternal Balanced TranslocationAsude Durmaz1, Tufan Çankaya2, Burak Durmaz1, Emin Karaca1, Ayça Aykut1, Haluk Akın1, Sermet Sağol3, Özgür Çoğulu1, Ferda Özkınay11Department Of Medical Genetics, Ege University Faculty Of Medicine, Izmir, Turkey2Department Of Medical Genetics, 9 September University, İzmir, Turkey 3Department Of Obstetrics And Gynecology, Ege University Faculty Of Medicine, Izmir, Turkey. Trisomies due to meiotic non-disjunctions usually occurs within 3.-4. decades. Fetal chromosomal anomalies can be detected by diagnostic and screening tests used depending on the gestational age. In this report, fetal karyotyping was performed due to increased risk for trisomy 18 in serum screening test and the karyotype was found to be 47,XY,t(2;18)(p21;q23),+18. Parental karyotype analysis were performed and a balanced maternal 46,XX,t(2;18)(p21;q23) translocation has been detected. Prenatal USG revealed intauterine growth retardation, typical clenched-hand posture and single umblical artery. The family decided termination of pregnancy after genetic counselling. Unbalanced karyotypes can be seen in families having balanced translocations. But this kind of unbalanced karyotypes due to 3: 1 missegragation is rarely seen. In this report, a rare trisomy 18 case having 47,XY,t(2;18)(p21;q23),+18 karyotype due to 3: 1 meiotic missegragation has been reported. Keywords: meiotic missegregation, 3: 1 missegragation, trisomy 18, prenatal diagnosisMaternal Dengeli Translokasyon Taşıyıcılığına Bağlı Gelişen Fetal Dengesiz 47,XY, t(2;18)(p21;q23),+18 Karyotipinin Prenatal TanısıAsude Durmaz1, Tufan Çankaya2, Burak Durmaz1, Emin Karaca1, Ayça Aykut1, Haluk Akın1, Sermet Sağol3, Özgür Çoğulu1, Ferda Özkınay11Ege Üniversitesi Tıp Fakültesi, Tıbbi Genetik Anabilim Dalı, İzmir, Türkiye2Dokuz Eylül Üniversitesi Tıp Fakültesi, Tıbbi Genetik Anabilim Dalı, İzmir, Türkiye 3Ege Üniversitesi Tıp Fakültesi, Kadın Hastalıkları Ve Doğum Anabilim Dalı, İzmir, Türkiye Mayozda maternal kromozomların ayrılamamasına bağlı gelişen trizomiler 30-40 yaşlarında artan bir oranda ortaya çıkmaktadır. Fetal kromozomal anomalilerini tespit etmek amacıyla gestasyonel yaşa bağlı olarak tanı ve tarama testeleri geliştirilmiştir. Asude Durmaz, Tufan Çankaya, Burak Durmaz, Emin Karaca, Ayça Aykut, Haluk Akın, Sermet Sağol, Özgür Çoğulu, Ferda Özkınay. Prenatal Diagnosis of Fetal Unbalanced 47,XY, t(2;18) (p21;q23),+18 Karyotype Due to Maternal Balanced Translocation. Ulus Travma Acil Cerrahi Derg. 2014; 1(2): 101-103 Corresponding Author: Asude Durmaz, Türkiye |
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