[The contribution of transfontanellar ultrasound in the early diagnosis of neonatal cerebral venous thrombosis: report on three cases].

The clinical aspects of neonatal cerebral venous thrombosis are polymorphic in their mode of onset, making diagnosis difficult. Transfontanellar ultrasound allows for the morphological and vascular exploration of intracranial contents. We report three cases of neonatal cerebral venous thrombosis diagnosed early by transfontanellar ultrasound. The patients were treated with low-molecular-weight heparin, and the outcome was favorable in all three newborns. Transfontanellar ultrasound has a variable sensitivity for the detection of thrombus, but it remains the first-line examination before any additional secondary exploration. The early diagnosis of neonatal cerebral venous thrombosis with transfontanellar ultrasound requires the implementation of emergency treatment.