scholarly journals Temporal lobe seizures from a posterior cerebral artery aneurysm presenting as memory flashbacks

CJEM ◽  
2009 ◽  
Vol 11 (04) ◽  
pp. 389-392 ◽  
Author(s):  
Mohamed A. Peera ◽  
Michael LoCurto

ABSTRACT Memory flashbacks are usually attributed to recreational drugs or psychiatric conditions. The differential diagnosis for memory flashbacks is diverse and challenging; moreover, management is influenced by the working diagnosis. We describe the case of a 35-year-old man who presented with memory flashbacks secondary to temporal lobe seizures from an unruptured aneurysm of the posterior cerebral artery. To our knowledge, a case of this nature has not been previously reported. This case demonstrates the need to recognize that, on rare occasions, a complaint of memory flashbacks can be the result of an organic etiology. We also discuss the challenging presentations of temporal lobe seizures, as they can easily be misdiagnosed as a psychiatric condition.

Author(s):  
M Fatehi Hassanabad ◽  
G Redekop ◽  
LS Yefet

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.


BMC Neurology ◽  
2014 ◽  
Vol 14 (1) ◽  
Author(s):  
Shinichiro Maeshima ◽  
Aiko Osawa ◽  
Fumitaka Yamane ◽  
Hidetoshi Shimaguchi ◽  
Ikuo Ochiai ◽  
...  

2010 ◽  
Vol 38 (1) ◽  
pp. 52-56 ◽  
Author(s):  
Yasuo MURAI ◽  
Koji ADACHI ◽  
Yoichi YOSHIDA ◽  
Akira TERAMOTO ◽  
Takayuki MIZUNARI

2003 ◽  
Vol 60 (6) ◽  
pp. 534-539 ◽  
Author(s):  
Hiroyuki Yoshioka ◽  
Takuhiro Hotta ◽  
Eiji Taniguchi ◽  
Naomi Hashimoto ◽  
Yasuyuki Kinoshita ◽  
...  

2021 ◽  
Vol 20 ◽  
Author(s):  
Vivek Murumkar ◽  
Sameer Peer ◽  
Jitender Saini ◽  
Hanumanthapura Ramalingaiah Arvinda

Abstract Persistent embryological connections between the anterior and posterior circulations are rare entities. Persistent hypoglossal artery is the second most common persistent carotid-basilar anastomosis. As it is often associated with hypoplasia of vertebral arteries, it poses a challenge during endovascular interventions. We present a case of a 32-year-old woman who presented with occipital headache of four weeks’ duration. Magnetic Resonance Angiography showed hypoplastic vertebral arteries with a persistent hypoglossal artery arising from the cervical segment of the left internal carotid artery and supplying the entire posterior circulation, associated with a dissecting aneurysm of the right posterior cerebral artery. Endovascular parent vessel occlusion was performed for the dissecting posterior cerebral artery aneurysm by navigating the guide catheter, microwire, and microcatheter through the persistent hypoglossal artery because the vertebral arteries were hypoplastic. Post-intervention, the patient did not develop any neurological deficit and was discharged in a stable condition.


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