RESUMEN
Cerebral venous thrombosis [CVT] is a rare vascular pathology in the infant characterized by a clinical and etiologic diversity. We report the case of CVT secondary to a severe deshydratation. It is about a one month old infant without notable pathological antecedents which presented 5 days before its hospitalization a refusal of feeding, a disorder of behavior and somnolence. The initial assessment showed a urinary infection with negative gram bacillus and a functional renal insufficiency. In front of the non improvement under treatment and the aggravation of the renal insufficiency, the patient was transferred to our formation. At admission the examination found an apyretic, icteric and hypertonic infant with dehydration of more than 15%and a convex anterior fontanella. Transfontanellar echography showed signs of cerebral haemorrhage and the CT-scan revealed a wide cerebral thrombosis. In spite of the rehydration and the antibioc, the patient deceased following a bradycardia with haemodynamic instability non responding to vaso-active drugs. The TVC is an unusual complication of deshydration in the infant. Through this observation the authors discuss the mechanisms of the TVC