A case of recurrent chronic subdural hematoma associated with dural arteriovenous fistula

Abstract

We have many reports of recurrent risk factors for chronic subdural hematomas (CSDHs). However, the case report associated with dural arteriovenous fistula (dAVF) is rare. An 86‒year‒old man with hemiparesis was referred to our hospital. CT scan showed bilateral CSDHs and we treated the right CSDH with burr‒hole irrigation, but the hematoma was progressed. After the third surgery, angiography was performed and dAVF near the transverse sinus was found. The fistula was treated with transvenous embolization and the CSDH was cured. The CSDH is a common disease for neurosurgeons. However it is sometimes difficult to treat recurrent CSDH. We should consider the possibility of the dAVF when CSDHs recur in a short period.