Reversible Cerebral Vasoconstriction Syndrome in a Previously Healthy Child: A Case Report.

Objectives: We describe the case of a healthy boy diagnosed with reversible cerebral vasoconstriction syndrome (RCVS) and posterior reversible encephalopathy syndrome (PRES). Methods: He was identified after presenting in the emergency department (ED). A review of the 5 previous cases of RCVS complicated with PRES reported in the literature was performed. Results: A 9-year-old boy was brought to the ED for intense, throbbing headache and vomiting. Physical and neurologic examinations were normal. Brain CT and CSF examination were unremarkable, and he was discharged after symptomatic relief. Five days later, he returned to the ED for generalized tonic-clonic seizures that ceased with levetiracetam. MRI with angiography showed PRES. Systolic hypertension refractory to therapy was documented. New-onset fluctuating right-sided paresis and paresthesia appeared, so MRI was repeated, showing diffuse cerebral vasoconstriction suggesting RCVS. Nimodipine was started with complete resolution of symptoms and normalization of blood pressure. Four weeks after discharge, TD and MRI showed total vasospasm resolution. There was no recurrence in 12-month follow-up. Discussion: This case emphasizes the interconnection between RCVS and PRES, highlighting the need to include both as differential diagnoses for severe headache and the essential role of MR angiography in the investigation.

[Cerebral venous thrombosis imagiologic features in a pregnant woman]. / Aspectos imagiológicos da trombose venosa cerebral numa mulher grávida.

Cerebral venous thrombosis (CVT) is a relatively rare but serious condition potentially reversible upon accurate diagnosis and adequate therapy. The peri-partum state and pregnancy are predisposing factors and TVC accounts for about 6% of maternal deaths. Its clinical symptoms depend on the the thrombus site and extension, and also on the existing collateral vessels network. We present the case of a 33 year-old woman, 13 weeks pregnant, that complained of headaches and whose cranial magnetic resonance imaging revealed a subtotal oclusión of the superior sagittal sinus. We discuss the imaging features of dural venous thrombosis in the acute phase.