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Acta Med Iugosl. 1989;43(2):147-56.

Ring chromosome 21.


A case of a rare anomaly of the human karyotype--ring chromosome 21--is presented. By analysing the prenatal amniotic fluid of a 38-year-old woman asking genetic advice, primarily because of a cystic fibrosis burdening her first pregnancy, the authors discovered this chromosomal anomaly and made the karyotype of both parents which showed that mother was a carrier of the same anomaly as observed in her unborn child. The karyotyping of her second 7-year-old child also revealed ring chromosome 21, identical with that in its mother and unborn sister.

[Indexed for MEDLINE]

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