{
  "abstract": "Introduction Infratentorial posterior fossa arteriovenous malformations (AVMs) are rare causes of spontaneous intracranial hemorrhage. While they represent fewer than 15% of all intracranial AVMs, posterior fossa malformations are associated with greater risk of rupture and higher morbidity and mortality in comparison to more common supratentorial AVMs.Case Description A 15-year-old male patient without a significant past medical history presented with altered mental status and severe headache. Non-contrast CT of the head obtained upon the patient‘s initial presentation demonstrated an acute hyperdense intraparenchymal hemorrhage centered in the right cerebellar hemisphere. The patient subsequently underwent urgent neurosurgical decompression and aspiration of the intracerebral hematoma. Post-procedural CT angiographic imaging of head revealed a nidus of serpiginous vessels along the anterior margin of the resection cavity, supplied by feeding branches of the right anterior inferior cerebellar artery (AICA), which was suspicious for arteriovenous malformation (AVM). Selective right vertebral cerebral angiography demonstrated the right cerebellar AVM nidus with arterial supply from branches of an enlarged right AICA and drainage via a superficial vein into the ipsilateral transverse sinus.Conclusions The posterior fossa is an uncommon location for arteriovenous malformation that is associated with an increased risk of spontaneous rupture and infratentorial hemorrhage. Approximately two-thirds of posterior fossa AVMs are located exclusively within the cerebellum, and the majority are supplied by branches of the superior cerebellar or anterior inferior cerebellar arteries. Postprocedural angiographic imaging is useful in determination of the cause of hemorrhage.Abstract C108 Figure 1Conflict of Interest No",
  "authors": [
    {
      "affiliations": [
        "Yale University, New Haven, USA"
      ],
      "name": "Danling Chen"
    },
    {
      "affiliations": [
        "Yale University, New Haven, USA"
      ],
      "name": "Alexander Kuehne"
    },
    {
      "affiliations": [
        "Yale University, New Haven, USA"
      ],
      "name": "Long Tu"
    }
  ],
  "title": "C108 Intracerebral hematoma resulting from a posterior fossa arteriovenous malformation supplied by the anterior inferior cerebellar artery",
  "uid": "5e0e60b2-bf23-57c9-9fe5-fddb1d1a04f6"
}