Classic maternal phenylketonuria and sonographic evidence of fetal trisomy 21: first description

Phenylketonuria is the best known pathology of amino acid metabolism. Presented here is the case of a 23-year-old prima gravida with phenylketonuria since birth. After delivery, her child was diagnosed with free trisomy 21. Abnormal sonographic signs such as bilateral hydrothorax, polyhydramnion, an...

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Bibliographic Details
Published inZeitschrift für Geburtshilfe und Neonatologie Vol. 213; no. 1; p. 1
Main Authors Lehnen, H, Vinke, M, Schwennicke, C, Pascheberg, U
Format Journal Article
LanguageGerman
Published Germany 01.02.2009
Subjects
Adult
Down Syndrome - diagnostic imaging
Down Syndrome - genetics
Female
Humans
Hydrothorax - diagnostic imaging
Infant, Newborn
Karyotyping
Male
Obstetric Labor, Premature - diagnostic imaging
Phenylalanine
Phenylketonurias - diagnostic imaging
Phenylketonurias - genetics
Polyhydramnios - diagnostic imaging
Pregnancy
Pregnancy Complications - diagnostic imaging
Pregnancy Complications - genetics
Pregnancy Trimester, Third
Prenatal Care
Ultrasonography, Prenatal
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Summary:Phenylketonuria is the best known pathology of amino acid metabolism. Presented here is the case of a 23-year-old prima gravida with phenylketonuria since birth. After delivery, her child was diagnosed with free trisomy 21. Abnormal sonographic signs such as bilateral hydrothorax, polyhydramnion, and short femura under the 10th percentile could be demonstrated in the ultrasound scan at 33 weeks of gestation. Regularly measured maternal phenylalanine levels during the complete pregnancy as well as preconceptionally were always under the embryopathic cutoff point of 1 200 micromoles/L (20 mg/L). An association seems unlikely. This is the first description of such a constellation according to a literature search (PubMed, Cochrane Library).
ISSN:0948-2393
DOI:10.1055/s-0028-1098734