Pure arterial malformation of the posterior cerebral artery: importance of its recognition

2013 ◽  
Vol 119 (3) ◽  
pp. 655-660 ◽  
Author(s):  
Nancy McLaughlin ◽  
Radoslav Raychev ◽  
Gary Duckwiler ◽  
Neil A. Martin
Keyword(s):  
Cerebral Artery ◽  
Rare Case ◽  
Healthy Adult ◽  
Posterior Cerebral Artery ◽  
Vascular Anomaly ◽  
3D Images ◽  
Arteriovenous Fistulas ◽  
Left Posterior ◽  
Distinguishing Features ◽  
Arterial Malformation

The finding of dilated, elongated, and tortuous vessels on brain imaging should prompt clinicians to determine what vascular anomaly is present. Importantly, not all suspicious serpentine flow voids are manifestations of arteriovenous malformations or arteriovenous fistulas. Other types of intracranial vasculopathies should also be considered. The authors report a rare case of dilated, tortuous, and redundant left posterior communicating artery and left P2 segment of the posterior cerebral artery identified in a young healthy adult that remained stable over a 30-year period. Dynamic and 3D images were critical for determining the type of vascular anomaly and for guiding appropriate management. The authors propose that this case represents a pure arterial malformation and discuss its distinguishing features.

scholarly journals Study of Posterior Cerebral Artery in Human Cadaveric Brain

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
S. A. Gunnal ◽  
M. S. Farooqui ◽  
R. N. Wabale
Keyword(s):  
Cerebral Artery ◽  
Basilar Artery ◽  
Posterior Cerebral Artery ◽  
Cerebral Arteries ◽  
Occipital Lobe ◽  
Common Trunk ◽  
Branching Pattern ◽  
Morphological Variations ◽  
Left Posterior ◽  
Mean Diameter

Objective. Basilar artery (BA) terminates in right and left posterior cerebral arteries (PCAs). Each PCA supplies respective occipital lobe of the cerebrum. The present study is designed to know the morphology, morphometry, branching pattern, and symmetry of PCA. Methods. The study included 340 PCAs dissected from 170 human cadaveric brains. Results. Morphological variations of P1 segment included, aplasia (2.35%), hypoplasia (5.29%), duplication (2.35%), fenestration (1.17%), and common trunk shared with SCA (1.76%). Morphological variations of origin of P2 segment included direct origin of it from BA (1.17%) and ICA (2.35%). Unusually, two P2 segments, each arising separately from BA and ICA, were observed in 1.17%. Unilateral two P2 segments from CW were found in 0.58%. Morphological variations of course of P2 were duplication (0.58%), fenestration (0.58%), and aneurysm (1.76%). Unilateral P2 either adult or fetal was seen in 4.71%. The group II branching pattern was found to be most common. Asymmetry of P2 was 40%. Morphometry of P2 revealed mean length of 52 mm and mean diameter of 2.7 mm. Conclusion. The present study provides the complete anatomical description of PCA regarding morphology, morphometry, symmetry, and its branching pattern. Awareness of these variations is likely to be useful in cerebrovascular procedures.

scholarly journals P.189 Unruptured Posterior Cerebral Artery aneurysm causing temporal lobe epilepsy

2021 ◽  
Vol 48 (s3) ◽  
pp. S74-S75
Author(s):  
M Fatehi Hassanabad ◽  
G Redekop ◽  
LS Yefet
Keyword(s):  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Cerebral Artery ◽  
Rare Case ◽  
Posterior Cerebral Artery ◽  
Cerebral Aneurysms ◽  
Artery Aneurysm ◽  
Parahippocampal Gyrus ◽  
Temporal Lobe Seizures ◽  
Cerebral Artery Aneurysm

Background: Cerebral aneurysms are an unusal cause of epilepsy. To date, several groups have reported temporal lobe seizures caused by aneurysms projecting into the parahippocampal gyrus. Given the low incidence of posterior cerebral artery aneurysms, they are a very rare cause of temporal lobe seizures. Methods: Here, we report a rare case of temporal lobe epilepsy caused by an unruptured aneurysm. We also present a review of the literature yielding two similar cases. Results: A previosuly well 56 year old male presented to a neurologist with symptoms consistent with temporal lobe epilepsy. He was started on carbamzepine and underwent imaging and neuropsychological assessments. An MRI suggested the existance of a 7mm posterior cerebral artery aneurysm arising from the P2 segment of the posterior cerebral artery and projecting into the parahippocampal gyrus. This was also confirmed with CT angiography and the patient elected to have the aneurysm clipped. Conclusions: Temporal lobe epilepsy is an uncommon presentation for unruptured cerebral aneurysms. We report a rare case wherein a laterally pointing PCA aneurysm was buried in the posterior parahippocampal gyrus. This aneurysm had caused perifocal gliosis leading to stereotyped seizures. Post-operatively, the patient has been seizure free.

scholarly journals Multiple Spontaneous Intracranial-Extracranial Arterial Dissections in a Patient with Osteogenesis Imperfecta

2017 ◽  
Vol 2017 ◽  
pp. 1-3 ◽  
Author(s):  
Mehmet Kolukısa ◽  
Elif Gökçal ◽  
Azize Esra Gürsoy ◽  
Çiğdem Deniz ◽  
Ayşe Aralaşmak ◽  
...  
Keyword(s):  
Osteogenesis Imperfecta ◽  
Cerebral Artery ◽  
Anterior Cerebral Artery ◽  
Posterior Cerebral Artery ◽  
Vascular Imaging ◽  
Left Vertebral Artery ◽  
Simultaneous Occurrence ◽  
Diffusion Weighted Mri ◽  
Left Posterior ◽  
The Right

A 40-year-old male with osteogenesis imperfecta (OI) was admitted to the hospital with an acute right monoparesis. Diffusion-weighted MRI showed infarction in the territory of the left anterior cerebral artery (ACA) and in the left posterior cerebral artery (PCA). In his vascular imaging, occlusion of the left vertebral artery (VA) starting from V2 segment was consistent with dissection and pseudoaneurysm in the right ACA. We presented this case because of the presence of spontaneous and simultaneous occurrence of both intracranial and extracranial arterial dissections in OI.

scholarly journals Radical “Visual Capture” Observed in a Patient with Severe Visual Agnosia

2003 ◽  
Vol 14 (1-2) ◽  
pp. 47-53
Author(s):  
Akiko Takaiwa ◽  
Hirokazu Yoshimura ◽  
Hirofumi Abe ◽  
Satoshi Terai
Keyword(s):  
Cerebral Artery ◽  
Posterior Cerebral Artery ◽  
Daily Life ◽  
Brain Infarction ◽  
Visual Capture ◽  
Visual Agnosia ◽  
Touch Condition ◽  
Contradictory Information ◽  
Visual Deficit ◽  
Left Posterior

We report the case of a 79-year-old female with visual agnosia due to brain infarction in the left posterior cerebral artery. She could recognize objects used in daily life rather well by touch (the number of objects correctly identified was 16 out of 20 presented objects), but she could not recognize them as well by vision (6 out of 20). In this case, it was expected that she would recognize them well when permitted to use touch and vision simultaneously. Our patient, however, performed poorly, producing 5 correct answers out of 20 in the Vision-and-Touch condition. It would be natural to think that visual capture functions when vision and touch provide contradictory information on concrete positions and shapes. However, in the present case, it functioned in spite of the visual deficit in recognizing objects. This should be called radical visual capture. By presenting detailed descriptions of her symptoms and neuropsychological and neuroradiological data, we clarify the characteristics of this type of capture.

scholarly journals A Rete Mirabile of the Posterior Cerebral Artery

2008 ◽  
Vol 14 (2) ◽  
pp. 195-202 ◽  
Author(s):  
L. Zheng ◽  
R. Metcalfe ◽  
JJ Bhattacharya
Keyword(s):  
Cerebral Artery ◽  
Posterior Cerebral Artery ◽  
Lateral Geniculate Body ◽  
Anterior Circulation ◽  
Arteriovenous Shunting ◽  
Rete Mirabile ◽  
Brain Avm ◽  
Left Posterior ◽  
Posterior Division ◽  
Anterior Choroidal

We present the case of a 41-year-old man with a vascular network associated with the left posterior cerebral artery (PCA). Although initially considered to be a brain AVM, further investigation showed no arteriovenous shunting and a rete mirabile of the PCA was diagnosed. A well known but rare occurrence mainly in the anterior circulation, rete mirabile has not previously been described in the PCA. The PCA is a composite vessel, developmentally. Its proximal portion derives from the posterior division of the ICA while its cortical territories are annexed from the anterior choroidal artery adjacent to the lateral geniculate body. We propose that this rete (or network) represents a persistence of the embryonic anastomosis between the AChA and the PCA.

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