Child Neurology: Mimics of cerebral sinovenous thrombosis: A pediatric case series.

Cerebral sinovenous thrombosis (CSVT) is an uncommon but increasingly recognized condition in children because of greater clinical awareness and improvement in imaging techniques.1 Diagnosis is primarily radiologic. Clinical presentation is often nonspecific, including headache, vomiting, lethargy, cranial nerve 6th palsy, and neonatal seizures.1 Demonstration of an intraluminal filling defect and impairment of blood flow within the affected venous channel, with either magnetic resonance or CT venography (MRV or CTV), is generally considered sufficient to radiologically confirm thrombosis before initiation of anticoagulants. There are potential pitfalls in the interpretation of filling defects and flow disturbances on both MRV and CTV.2,3 We present 3 cases diagnosed as CSVT with intraluminal filling defects and flow impairment in dural venous sinuses, which illustrate these potential pitfalls.