Prenatal MR imaging of dural sinus malformation: A case report

Andrea Rossi, Pierangela De Biasio, Eloisa Scarso, Carlo Gandolfo, Marco Pavanello, Giovanni Morana, Pier Luigi Venturini, Paolo Tortori-Donati

Research output: Contribution to journalArticlepeer-review


Objective: To describe prenatal magnetic resonance imaging (MRI) findings of dural sinus malformation (DSM), a very rare, congenital form of dural arteriovenous shunt (DAVS), typically affecting newborns. Methods: Ultrasound (US) and MRI were performed at 34 weeks' gestation, and the findings of these examinations were compared with postnatal MRI studies performed at 2 days and 1 month. Results: US showed an anechoic, midline posterior fossa collection with irregular internal echodensities. Color Doppler showed prominent arterial vascularity at the lesion margins. The prenatal MRI showed a large, profoundly hypointense, midline retrocerebellar mass. Postnatal MRI, complemented with magnetic resonance (MR) angiography, showed the lesion to be a giant dural venous pouch fed by multiple mural arteriovenous shunts. Follow-up MRI at 1 month suggested latent venous hypertension and prompted endovascular treatment. Conclusion: Prenatal MR imaging is useful to establish the diagnosis, to assess complications such as hydrocephalus and tonsillar prolapse, and to help plan perinatal management, postnatal follow-up, and treatment decision-making.

Original languageEnglish
Pages (from-to)11-16
Number of pages6
JournalPrenatal Diagnosis
Issue number1
Publication statusPublished - Jan 2006


  • Arteriovenous fistula
  • Dural sinus malformation
  • Magnetic resonance
  • Prenatal diagnosis

ASJC Scopus subject areas

  • Genetics(clinical)
  • Obstetrics and Gynaecology


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