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Fetal magnetic resonance imaging of an intracranial venous thrombosis. Case report.

Breysem L, Witters I, Spitz B, Moerman P, Smet MH

Department of Radiology, University Hospitals Gasthuisberg, Leuven, Belgium. luc.breysem@uz.kuleuven.ac.be

OBJECTIVE: To describe the magnetic resonance imaging findings of an antenatal intracranial venous thrombosis. METHODS: Prenatal ultrasound (US) at 22 weeks' gestational age (GA) in a 27-year-old patient (G2 P1) revealed a nonspecific avascular echogenic mass above the cerebellum evaluated with MRI at 23 weeks' GA. RESULTS: With MRI an enlarged occipital pericerebral space with a layered ovoid mass at the torcular herophili was demonstrated and MRI characteristics suggested a subacute cloth. In follow-up, an important enlargement of the mass was noticed on US examinations. After multidisciplinary consult and parental consent, a prostaglandin induction was performed at 25 weeks' GA. The baby died immediately after birth. Pathology confirmed the diagnosis of a venous thrombosis at the torcular herophili with extension into the superior sagittal sinus. CONCLUSION: In our case, MRI findings were helpful in diagnosing an intracranial fetal venous thrombosis.

Published 15 December 2005 in Fetal Diagn Ther, 21(1): 13-7.
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