Cerebral Venous Thrombosis without Thrombocytopenia after COVID-19 Vaccination

Cerebral venous thrombosis (CVT) is a rare form of cerebrovascular attack and its predisposing factors commonly co-exist. In the coronavirus disease 2019 (COVID-19) era, various side effects of COVID-19 vaccine have been reported, and CVT is one of the well-known types. It is usually explained as prothrombotic immune thrombocytopenia by an antibody binding to platelet factor 4 receptor. However, some cases are irrelevant to thrombocytopenia and calls for a new explanation. Here we report a case of CVT without thrombocytopenia after COVID-19 vaccination.