title: Early prenatal diagnosis of concordant posterior urethral valves in male monochorionic twins.
abstract: The association between monozygotic twins and posterior urethral valves (PUV) in postnatal life has been thoroughly described. In the fetus, the prenatal recognition of PUV is feasible. However, it has been repeatedly reported in singletons but never in monochorionic twins. We describe two cases of early prenatal diagnosis of concordant PUVs in monochorionic twins. In one of the sets, the expression of the disease was different for each twin.
authors.affiliation: Prenatal Diagnosis Unit, Department of Gynecology and Obstetrics, University Federico II of Naples, Naples, Italy.
authors.forename: G M
authors.initials: GM
authors.lastname: Maruotti
authors.forename: A
authors.initials: A
authors.lastname: Agangi
authors.forename: P
authors.initials: P
authors.lastname: Martinelli
authors.forename: D
authors.initials: D
authors.lastname: Paladini
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000196:embryology / Q000473:pathology; D008297:Male; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis; D014430:Twins, Monozygotic; D014463:Ultrasonography; D014521:Urethra / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology