title: A case of triploidy detected by crosstrimester test.
abstract: A 40-year-old woman presented in her second pregnancy, naturally conceived. Maternal serum screening and ultrasound examination raised concerns regarding aneuploidy. After genetic counselling an amniocentesis was performed, showing a 69,XXX karyotype.Here we report a case of digynic triploidy, which resulted from fertilization of a diploid ovum by a single sperm.
authors.affiliation: Department of Medical Genetics, "Spirito Santo" Hospital, Pescara, Italy ; Department of Medical Genetics a University of Chieti, Chieti, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Guanciali-Franchi
authors.forename: Irene
authors.initials: I
authors.lastname: Iezzi
authors.forename: Barbara
authors.initials: B
authors.lastname: Matarrelli
authors.forename: Elisena
authors.initials: E
authors.lastname: Morizio
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Calabrese
authors.forename: Giandomenico
authors.initials: G
authors.lastname: Palka