[Spinal artery aneurysm associated with dural AVM of the posterior fossa]

The incidence of an aneurysm of the spinal artery is extremely rare. Only several cases have been documented previously. Herewith, the authors present a patient with a ruptured aneurysm of the anterior spinal artery associated with dural AVM of the posterior fossa. A 51-year-old male had a sudden onset of occipital headache and left shoulder pain. Lumbar puncture revealed bloody CSF. Angiography showed a saccular aneurysm, filling from the anterior spinal artery and dural AVM of the posterior fossa. Aneurysmal neck clipping and cauterization for nidus of dural AVM was performed successfully through suboccipital craniectomy with laminectomy of C1 and C2. The authors reviewed the literature and discussed the features of the aneurysm of a spinal artery.