The Experts below are selected from a list of 174 Experts worldwide ranked by ideXlab platform
Robert F Spetzler - One of the best experts on this subject based on the ideXlab platform.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:Objective This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. Clinical presentation A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. Intervention A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Conclusion Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
Steven W Chang - One of the best experts on this subject based on the ideXlab platform.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:Objective This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. Clinical presentation A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. Intervention A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Conclusion Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
Yunbao Guo - One of the best experts on this subject based on the ideXlab platform.
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Clinical importance of the Posterior Meningeal Artery: a review of the literature.
The neuroradiology journal, 2019Co-Authors: Guangming Wang, Kun Hou, Yunbao GuoAbstract:The Posterior Meningeal Artery, which arises from the vertebral Artery, is a critical Artery in neurological lesions. However, a comprehensive review of the importance of the Posterior Meningeal Artery is currently lacking. In this study, we used the PubMed database to perform a review of the literature on the Posterior Meningeal Artery to increase our understanding of its role in vascular lesions. The Posterior Meningeal Artery provides the main blood supply to the paramedial and medial portions of the dura covering the cerebellar convexity. The Posterior Meningeal Artery is often involved in dural arteriovenous fistulas occurring near the Posterior fossa, and the Posterior Meningeal Artery can be the path for transarterial embolisation or a path through which to monitor the degree of dural arteriovenous fistula embolisation. In Posterior circulation ischaemia and moyamoya disease, the Posterior Meningeal Artery can form transdural anastomoses with pial arteries at the surface of the brain, and these can help prevent ischemia. The Posterior Meningeal Artery can also develop aneurysms, most of which are traumatic pseudoaneurysms; patients should therefore be treated in a timely manner or followed up carefully in cases of rebleeding. In addition, during a craniotomy, the Posterior Meningeal Artery should be protected intraoperatively to avoid damaging any transdural anastomosis that may be present. In addition, when the Posterior Meningeal Artery is the main feeding Artery of an intracranial tumour, that Artery is a satisfactory path for preoperative embolisation. Briefly, the Posterior Meningeal Artery is a very important Artery in neurosurgery.
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Delayed Establishment of Collateral Circulation from Posterior Meningeal Artery After Proximal Occlusion of Posterior Inferior Cerebellar Artery: Case Report and Literature Review.
World neurosurgery, 2018Co-Authors: Kun Hou, Yunbao GuoAbstract:Background A dissecting aneurysm on the Posterior inferior cerebellar Artery (PICA) is a rare entity, and endovascular embolization is often adopted. During the procedure, if the parent Artery is occluded, the distal PICA is usually supplied by the ipsilateral anterior inferior Artery or contralateral PICA. In extremely rare circumstances, the distal PICA can establish collateral circulation by transdural anastomosis with the Posterior Meningeal Artery (PMA). Case Description A 29-year-old woman was admitted complaining of thunderclap headache, nausea, and vomiting for 3 hours. Head computed tomography and digital subtraction angiography revealed subarachnoid hemorrhage and a dissecting aneurysm located at the tonsillomedullary segment of PICA. The parent Artery distal to the aneurysm had no collateral circulation from the adjacent arteries. Selective endovascular coiling of the aneurysm with preservation of the parent Artery was adopted for treatment. The patient experienced an uneventful postprocedural recovery. To our surprise, follow-up digital subtraction angiography 6 months later revealed complete occlusion of the aneurysm and parent Artery at the site of aneurysm formation. A rare anastomosis between the distal PICA and PMA was established. Conclusions A report about this rare condition suggested that after occlusion of the PICA trunk, the distal PICA can form collateral circulation with the PMA. A potential collateral circulation may be present in advance between the PICA and PMA. When ischemia occurs in the distal PICA, this collateral circulation may open and could be reconstructed and enlarged to provide blood supply.
Giriraj K Sharma - One of the best experts on this subject based on the ideXlab platform.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:Objective This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. Clinical presentation A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. Intervention A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Conclusion Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
Udaya K Kakarla - One of the best experts on this subject based on the ideXlab platform.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.
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Posterior inferior cerebellar Artery origin thrombosis with aneurysm of collateralized Posterior Meningeal Artery presenting as subarachnoid hemorrhage: case report.
Neurosurgery, 2009Co-Authors: Steven W Chang, Udaya K Kakarla, Giriraj K Sharma, Robert F SpetzlerAbstract:Objective This is the first report of a ruptured aneurysm involving a collateral branch to the Posterior inferior cerebellar Artery (PICA) in a patient who had a subarachnoid hemorrhage. Clinical presentation A 56-year-old man initially presented with a subarachnoid hemorrhage and underwent 2 catheter-based 4-vessel angiograms with negative results. A delayed angiogram 4 weeks later revealed a dissecting aneurysm of the Posterior Meningeal Artery, a branch of the vertebral Artery. Intervention A 3-dimensional reconstruction of the vertebral angiogram showed proximal occlusion of the proximal left PICA and distal filling via a collateral branch from the Posterior Meningeal Artery. A far-lateral approach was used for this patient. The aneurysm was found along the course of the collateral Posterior Meningeal Artery and was clipped successfully. Conclusion Aneurysms involving collateral branches of the PICA are rare. It is important to recognize such collateral flow preoperatively because inadvertent sacrifice of these vessels during a surgical approach could lead to stroke and neurological deficits of the PICA territory.