Mosaic trisomy 6 and maternal uniparental disomy 6 in a 23‐week gestation fetus with atrioventricular septal defect

Abstract excerpt

Trisomy 6 is seen in early miscarriages in association with an intact, empty amniotic sac or as a pseudomosaic in amniotic fluid cultures. We report the finding of mosaic trisomy 6 in a 23-week-gestation pregnancy terminated because of intrauterine death. The post-mortem showed a well formed macerated male fetus with an atrioventricular septal defect and an exomphalos. By conventional cytogenetics, trisomy 6 was...

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