Related Experiment Video
Updated: Jul 11, 2026
04:56
Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Giant true posterior communicating artery aneurysm.
S Kawaguchi1, H Noguchi, T Yonezawa
1Department of Neurosurgery, Nara Medical University, Nara, Japan.
Summary
A rare giant posterior communicating artery aneurysm presented as Korsakoff's syndrome. Imaging revealed a partially thrombosed aneurysm, highlighting the diagnostic challenges of giant true PCoA aneurysms.
Area of Science:
- Neurology
- Radiology
- Vascular Surgery
Background:
- Giant posterior communicating artery (PCoA) aneurysms are exceptionally rare vascular malformations.
- True PCoA aneurysms are seldom reported, with giant forms being even rarer.
- Aneurysms in this location can present with diverse neurological deficits.
Purpose of the Study:
- To report a rare case of a giant true PCoA aneurysm.
- To correlate radiological findings with a unique clinical presentation.
- To discuss the diagnostic and clinical characteristics of giant true PCoA aneurysms.
Main Methods:
- Case report of a patient with a giant PCoA aneurysm.
- Diagnostic imaging included left carotid angiography and 3D computed tomography angiography (CTA).
- Functional brain imaging using single-photon emission computed tomography (SPECT) assessed regional cerebral blood flow.
Main Results:
- The patient presented with symptoms consistent with Korsakoff's syndrome.
- Angiography confirmed a partially thrombosed giant PCoA aneurysm.
- 3D CTA delineated the aneurysm neck and adjacent structures.
- SPECT revealed hypoperfusion in the bilateral frontal, temporal, and thalamic regions.
Conclusions:
- Giant true PCoA aneurysms are exceedingly rare, with significant diagnostic and clinical implications.
- This case underscores the importance of advanced neuroimaging in diagnosing complex cerebrovascular conditions.
- The radiological features and clinical presentation, including Korsakoff's syndrome, offer insights into the pathophysiology of giant PCoA aneurysms.
More Related Videos
13:10Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery (ALCAPA)
Published on: April 24, 2017
18:50Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
Related Concept Videos
01:10The 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...
Encircling the heart, the coronary arteries form a ring-like structure before...
01:30Aneurysm I: Introduction
An aortic aneurysm is a localized outpouching or dilation at a weak point in the artery wall. It may involve different parts of the aorta, such as the abdominal aorta, aortic arch, or thoracic aorta.Etiological factorsSeveral disorders are associated with aortic aneurysms.Congenital causes, such as primary connective tissue disorders like Marfan syndrome, impact the integrity and strength of connective tissues, notably affecting the aorta. Marfan syndrome is a genetic disorder that specifically...
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
01:26Aneurysm III: Interprofessional Care
Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
01:26Arteries 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...
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
01:15Thoracic Aorta
The thoracic section of the aorta begins at the T5 vertebra and extends to the T12 level at the diaphragm, initially progressing through the mediastinum to the left of the spinal column. Throughout its course in the thoracic segment, the thoracic aorta emits various offshoots known collectively as visceral and parietal branches. The branches that predominantly supply blood to visceral organs are termed visceral branches and include bronchial, pericardial, esophageal, and mediastinal arteries,...