Posterior inferior cerebellar artery originating from the posterior meningeal artery mimicking dural arteriovenous fistula

ConclusionWe present an anatomical variant of the PICA mimicking a dural arteriovenous fistula. Digital subtraction angiography is useful for diagnosis of the cortical segment of the PICA flowing retrograde from the distal segment of the PMA because signal intensity in MRA of retrograde flow tends to decrease and diagnosis may be difficult. During endovascular treatment and open surgery, we should note that ischemic complications may occur due to the potential anastomosing channels between cerebral and dural arteries.
Source: Surgical and Radiologic Anatomy - Category: Anatomy Source Type: research