Co-existence of bilateral fetal type posterior cerebral artery and the bilateral giant internal carotid artery aneurysms in an ataxic patient

2012 ◽  
Vol 81 (6) ◽  
pp. 1388-1389 ◽  
Author(s):  
Konuralp Ilbay ◽  
Ozgur Ismailoglu ◽  
Baki S. Albayrak
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Posterior Cerebral Artery

Competitive flow diversion of multiple P1 aneurysms: proposed classification

2020 ◽  
Vol 13 (6) ◽  
pp. e015581
Author(s):  
Mark Alexander MacLean ◽  
Thien J Huynh ◽  
Matthias Helge Schmidt ◽  
Vitor M Pereira ◽  
Adrienne Weeks
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Posterior Cerebral Artery ◽  
Flow Diversion ◽  
Endovascular Coiling ◽  
Ruptured Aneurysms ◽  
The Right

We report the case of a patient with subarachnoid hemorrhage and three aneurysms arising from the posterior communicating artery (Pcomm)-P1 complex, treated with endovascular coiling and competitive flow diversion. The largest and likely ruptured Pcomm aneurysm was treated with traditional coiling. Two smaller potentially ruptured aneurysms arose from the distal right posterior cerebral artery (PCA) P1 segment. After a failed attempt to treat with conventional flow diversion across the PCA-P1 segment, the P1 aneurysms were successfully treated with competitive flow diversion distal to the PCA-P1 segment from Pcomm to the P2 segment. Over 12 months, competitive flow diversion redirected flow to the right PCA territory via the internal carotid artery-Pcomm-P2, reducing the size of the PCA-P1 segment and obliterating the P1 aneurysms. Competitive flow diversion treatment should be considered for aneurysms occurring at the circle of Willis when traditional methods are not feasible. Herein, we introduce a novel classification for competitive flow diversion treatment.

Republished: Competitive flow diversion of multiple P1 aneurysms: proposed classification

2020 ◽  
Vol 12 (9) ◽  
pp. e7-e7
Author(s):  
Mark Alexander MacLean ◽  
Thien J Huynh ◽  
Matthias Helge Schmidt ◽  
Vitor M Pereira ◽  
Adrienne Weeks
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Posterior Cerebral Artery ◽  
Flow Diversion ◽  
Endovascular Coiling ◽  
Ruptured Aneurysms ◽  
The Right

We report the case of a patient with subarachnoid hemorrhage and three aneurysms arising from the posterior communicating artery (Pcomm)-P1 complex, treated with endovascular coiling and competitive flow diversion. The largest and likely ruptured Pcomm aneurysm was treated with traditional coiling. Two smaller potentially ruptured aneurysms arose from the distal right posterior cerebral artery (PCA) P1 segment. After a failed attempt to treat with conventional flow diversion across the PCA-P1 segment, the P1 aneurysms were successfully treated with competitive flow diversion distal to the PCA-P1 segment from Pcomm to the P2 segment. Over 12 months, competitive flow diversion redirected flow to the right PCA territory via the internal carotid artery-Pcomm-P2, reducing the size of the PCA-P1 segment and obliterating the P1 aneurysms. Competitive flow diversion treatment should be considered for aneurysms occurring at the circle of Willis when traditional methods are not feasible. Herein, we introduce a novel classification for competitive flow diversion treatment.

scholarly journals EVALUATION OF VASOMOTOR RESPONSE IN OPHTHALMIC MIGRAINE PATIENTS

2016 ◽  
Vol 15 (2) ◽  
pp. 75-79
Author(s):  
Adriana Bulboaca ◽  
◽  
Corina Ursu ◽  
A. Bulboaca ◽  
◽  
...  
Keyword(s):  
Plasma Concentration ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Cerebral Artery ◽  
Internal Carotid ◽  
Posterior Cerebral Artery ◽  
Pathophysiological Mechanism ◽  
Vasomotor Response ◽  
Hemodynamic Changes ◽  
Flow Velocities

Introduction. Hemodynamic changes of the cerebral arteries in ophthalmic migraine may be an important pathophysiological mechanism of the disease. The nitric oxide (NO) synthesis plays a significant role in hemodynamic changes due to vasodilatation effect. The purpose of this study is to evaluate the possible hemodynamic changes by Doppler measurements and their correlation with NO synthesis in ophthalmic migraine. Method. 37 ophthalmic migraine patients were compared with 35 healthy volunteers. Other cerebral and ophthalmic diseases were excluded by ophthalmological, neurological, and cranial MRI examinations. The migraine assessment scale (MIDAS) was used for clinical evaluation. Transcranial Doppler ultrasonography (TCD) was performed using 2 and 4 MHz frequencies transducers. The flow velocities of the internal carotid artery, middle cerebral artery, posterior cerebral artery, and NO plasma concentration were assessed 2 hours after migraine attacks. Results. The NO synthesis was significantly increased compared to the control group. The flow velocities decreased in internal carotid artery, middle cerebral artery, and posterior cerebral artery. The correlation between decreased flow velocities and NO plasma concentration was significant. Conclusions. Autonomic nervous system dysfunction in ophthalmic migraine is an important pathophysiological mechanism. The flow velocity status may reflect the vasomotor response and endothelial reactivity induced by NO synthesis. Further studies on the vasomotor response are necessary for the evaluation of this pathophysiological mechanism implication in ophthalmic migraine.

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