A posterior fossa arteriovenous malformation-AVM

Presentation: A mid-twenties pregnant woman presented in coma.

Imaging:  CT scan (Figure 1).  Cerebral Angiography. (Figure 2. ) 

Figure 1. Posterior fossa hemorrhage

Figure 2. Cerebral angiogram

Treatment:  Two stages of embolization followed by posterior fossa craniotomy for resection of AVM.