[Trisomy 20 mosaicism in amniotic cell culture. Genetic counselling during the prenatal diagnosis].
The author presents a new case of trisomy 20 mosaicism in an amniotic fluid culture and emphasizes the special aspects of this chromosomal abnormality. The prenatal diagnosis of "pseudo-mosaicism" is easier when in situ culture techniques are used. Controls of the results on a new sample of amniotic fluid and/or on foetal blood are useful to reinforce the diagnosis and to allow pregnancy to be continued.
Rabineau
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Service d"istologie-Embryologie-Cytogénétique, Groupe hospitalier Cochin, Paris.
D000649:Amniocentesis / Q000379:methods*; D002869:Chromosome Aberrations / Q000175:diagnosis* / Q000235:genetics; D025063:Chromosome Disorders; D002890:Chromosomes, Human, Pair 20; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009030:Mosaicism / Q000235:genetics*; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014314:Trisomy
Trisomie 20 en mosaïque dans une culture de cellules amniotiques. Conseil génétique au cours du diagnostic prénatal.