Related Experiment Video

Updated: Aug 10, 2026

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
18:50

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment

Published on: September 25, 2009

Spontaneous dissection of the anterior inferior cerebellar artery

J H Hancock1, J S Millar

  • 1Department of Clinical Radiology, Wessex Neurological Centre, Southampton General Hospital, UK.

Neuroradiology
|August 22, 2000
PubMed

Insights

A brain stem infarct patient showed an unusual lesion on MRI. This was identified as a rare dissecting aneurysm of the left anterior inferior cerebellar artery, a previously unreported phenomenon.

Area of Science:

  • Neurology
  • Neuroradiology
  • Vascular Neurology

Background:

  • Brain stem infarcts present with diverse neurological deficits.
  • Cerebellopontine angle lesions require careful diagnostic evaluation.
  • Intracranial artery dissection is a rare but significant cause of stroke.

Observation:

  • A patient presented with symptoms suggestive of a brain stem infarct.
  • Magnetic resonance imaging (MRI) revealed infarction in the brain stem.
  • An unusual lesion was noted in the left cerebellopontine angle cistern on MRI.

Findings:

  • Serial MRI demonstrated the evolution of the cerebellopontine angle lesion.
  • Angiographic findings confirmed a dissecting aneurysm.
  • The lesion was diagnosed as a dissecting aneurysm of the left anterior inferior cerebellar artery (AICA).
  • This represents a previously unreported cause of brain stem infarct and AICA dissection.

Implications:

  • This case highlights the importance of considering arterial dissection in the differential diagnosis of brain stem infarcts.
  • Unusual lesions in the cerebellopontine angle may represent rare vascular pathologies.
  • Understanding the presentation and diagnosis of intracranial dissection is crucial for effective patient management.

More Related Videos

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms11:58

Minimally Invasive Thumb-sized Pterional Craniotomy for Surgical Clip Ligation of Unruptured Anterior Circulation Aneurysms

Published on: August 11, 2015

Endovascular Perforation Model for Subarachnoid Hemorrhage Combined with Magnetic Resonance Imaging (MRI)06:30

Endovascular Perforation Model for Subarachnoid Hemorrhage Combined with Magnetic Resonance Imaging (MRI)

Published on: December 16, 2021

Related Concept Videos

The Arch of Aorta01:10

The Arch of Aorta

The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
Abdominal Aorta01:25

Abdominal Aorta

Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
The celiac trunk, a singular artery, divides into the left gastric artery, which...
Arteries of the Head and Neck01:26

Arteries of the Head and Neck

The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...