title: Prenatal ultrasound detection of bilateral focal polymicrogyria.
abstract: OBJECTIVE
  Prenatal diagnosis by ultrasound of fetal polymicrogyria has been reported only once.
  
  
  METHODS
  We describe an additional case of polymicrogyria in a fetus from a monozygotic twin pair, probably the consequence of twin-to-twin transfusion syndrome.
  
  
  RESULTS
  On ultrasound, there were bilateral cortical hyperechogenic spots, and prenatal magnetic resonance imaging demonstrated the typical features of bilateral focal polymicrogyria.
  
  
  CONCLUSIONS
  Polymicrogyria can be considered in the differential diagnosis of hyperechogenic brain lesions on fetal ultrasound. We also confirm the risk of brain damage in monochorionic twins pregnancies and the likely hypoxic-ischemic etiology of polymicrogyria.
authors.affiliation: Department of Radiology and Neuroradiology, Ospedale Buzzi-ICP, Milano, Italy. lineiurban@hotmail.com
authors.forename: Linei Augusta Brolini
authors.initials: LA
authors.lastname: Delle Urban
authors.forename: Andrea
authors.initials: A
authors.lastname: Righini
authors.forename: Mariangela
authors.initials: M
authors.lastname: Rustico
authors.forename: Fabio
authors.initials: F
authors.lastname: Triulzi
authors.forename: Umberto
authors.initials: U
authors.lastname: Nicolini
mesh_terms: D000328:Adult; D005260:Female; D005330:Fetofetal Transfusion / Q000150:complications*; D005625:Frontal Lobe / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology; D006801:Humans; D008279:Magnetic Resonance Imaging; D009421:Nervous System Malformations / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000196:embryology / Q000209:etiology; D010296:Parietal Lobe / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology; D011247:Pregnancy; D014430:Twins, Monozygotic; D016216:Ultrasonography, Prenatal