Subarachnoid hemorrhage caused by ruptured dissecting aneurysm arising from the extracranial distal posterior inferior cerebellar artery--case report

Neurol Med Chir (Tokyo). 2010 Jan;50(1):41-4. doi: 10.2176/nmc.50.41.

Abstract

A 50-year-old man presented with a dissecting aneurysm arising from the extracranial portion of the right posterior inferior cerebellar artery (PICA) causing subarachnoid hemorrhage (SAH) and manifesting as sudden onset of disturbed consciousness. Computed tomography showed SAH with ventricular reflux predominantly in the posterior fossa. Angiography revealed a fusiform aneurysm of the right PICA originating extracranially from the right vertebral artery. The aneurysm was isolated and excised. Histological examination showed dissection of the aneurysm wall. Dissecting aneurysm arising from the extracranial portion of the PICA is extremely rare.

Publication types

  • Case Reports

MeSH terms

  • Cerebellum / blood supply*
  • Cerebral Angiography
  • Consciousness Disorders / etiology
  • Contrast Media
  • Cranial Fossa, Posterior / diagnostic imaging
  • Cranial Fossa, Posterior / pathology
  • Cranial Fossa, Posterior / surgery
  • Fourth Ventricle / diagnostic imaging
  • Fourth Ventricle / pathology
  • Fourth Ventricle / physiopathology
  • Humans
  • Male
  • Middle Aged
  • Neurosurgical Procedures / instrumentation
  • Neurosurgical Procedures / methods
  • Subarachnoid Hemorrhage / diagnostic imaging
  • Subarachnoid Hemorrhage / pathology*
  • Surgical Instruments
  • Tomography, X-Ray Computed
  • Treatment Outcome
  • Vascular Surgical Procedures / instrumentation
  • Vascular Surgical Procedures / methods
  • Vertebral Artery / anatomy & histology
  • Vertebral Artery / diagnostic imaging
  • Vertebral Artery / pathology*
  • Vertebral Artery Dissection / complications*
  • Vertebral Artery Dissection / diagnostic imaging
  • Vertebral Artery Dissection / pathology*

Substances

  • Contrast Media