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J Clin Ultrasound. 2011 Mar-Apr;39(3):164-8. doi: 10.1002/jcu.20762. Epub 2010 Dec 6.

A case of an epignathus with intracranial extension appearing as a persistently open mouth at 16 weeks and subsequently diagnosed at 20 weeks of gestation.

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Charles University in Prague, First Faculty of Medicine, Department of Obstetrics and Gynecology of the First Faculty of Medicine and General University Hospital, Apolinářská 18, 128 51, Prague 2, Czech Republic.


We report a rare case of oral mass (epignathus) with intracranial extension originally suspected antenatally at 16 weeks' gestation because of a persistent open mouth. Postmortem MRI and pathologic examination of the fetus confirmed an oral teratoma with bilateral ventricular dilatation, corpus callosum agenesis, and a neuroepithelial intracranial cyst. The relevant literature regarding this anomaly is reviewed.

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