Middle Cerebral Artery Aneurysm: Incidental Small Saccular MCA Aneurysm with Complex Geometry in a Patient with Ischemic Pontine Stroke – Microsurgical Clipping of the Saccular Aneurysm and Wrapping of a Blister Aneurysm on the Inferior MCA Branch (Postoperative DSA Confirmed the Complete Occlusion of the Saccular Aneurysm and Patency of Both Efferent MCA Branches – Development of a High-Grade Stenosis of the Inferior Trunk of the MCA, Possibly Induced by Muslin Gauze, and Eventually Formation of a De Novo Aneurysm)

2018 ◽  
pp. 1-10
Author(s):  
Muhammad AlMatter ◽  
Marta Aguilar Pérez ◽  
Oliver Ganslandt ◽  
Hans Henkes
Keyword(s):  
De Novo ◽  
Complex Geometry ◽  
Artery Aneurysm ◽  
Saccular Aneurysm ◽  
High Grade ◽  
Complete Occlusion ◽  
Microsurgical Clipping ◽  
De Novo Aneurysm ◽  
Mca Aneurysm ◽  
Cerebral Artery Aneurysm

scholarly journals De novo aneurysm formation after the contralateral middle cerebral aneurysm clipping operation: a case report and review of literature

2021 ◽  
Author(s):  
zhiwu wu ◽  
Meihua Li
Keyword(s):  
De Novo ◽  
Artery Aneurysm ◽  
Contralateral Side ◽  
Left Middle Cerebral Artery ◽  
Review Of Literature ◽  
Middle Cerebral Artery Aneurysm ◽  
Aneurysm Clipping ◽  
De Novo Aneurysm ◽  
Cerebral Artery Aneurysm ◽  
Left Middle

A left middle cerebral artery aneurysm was ruptured and clipped, but a de novo aneurysm on contralateral side ruptured within 5 years in a 38-year-old man. The cause of the formation of de novo aneurysms is unknown and is not consistent with most of current reports.

scholarly journals Short- and midterm outcome of ruptured and unruptured intracerebral wide-necked aneurysms with microsurgical treatment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sae-Yeon Won ◽  
Volker Seifert ◽  
Daniel Dubinski ◽  
Sepide Kashefiolasl ◽  
Nazife Dinc ◽  
...  
Keyword(s):  
De Novo ◽  
Complete Occlusion ◽  
Midterm Outcome ◽  
Microsurgical Clipping ◽  
Single Center Study ◽  
Significant Difference ◽  
Retreatment Rate ◽  
De Novo Aneurysm ◽  
The Stability

AbstractTo clip or coil has been matter of debates for several years and is the domain of interdisciplinary decision making. However, the microsurgical outcome has still been elusive concerning wide neck aneurysms (WNA). A retrospective single center study was performed with all patients with ruptured WNA (rWNA) and unruptured WNA (uWNA) admitted to author´s institute between 2007–2017. Microsurgical outcome was evaluated according to Raymond-Roy occlusion grade and follow-up angiography was performed to analyze the stability of neck/aneurysm remnants and retreatment poverty. Of 805 aneurysms, 139 were rWNA (17.3%) and 148 uWNA (18.4%). Complete occlusion was achieved in 102 of 139 rWNA (73.4%) and 112 of 148 uWNA (75.6%). Neck remnants were observed in 36 patients with rWNA (25.9%) and 30 patients with uWNA (20.3%), 1 (0.7%) and 6 (4.1%) patients had aneurysmal remnant, respectively. Overall complication rate was 11.5%. At follow-up (939/1504 months), all remnants were stable except for one, which was further conservatively treated with marginal retreatment rate under 1%. Even the risk of de-novo aneurysm was higher than the risk for remnant growth (2.6% vs 0% in rWNA; 8.7% vs 5.3% in uWNA) without significant difference. Microsurgical clipping is effective for complete occlusion of r/uWNA with low complication. Furthermore, the risk of remnant growth is marginal even lower than the risk of de-novo rate low retreatment rate.

scholarly journals Rapid de novo aneurysm formation after clipping of a ruptured middle cerebral artery aneurysm in an infant with an MYH11 mutation

2016 ◽  
Vol 18 (4) ◽  
pp. 463-470 ◽  
Author(s):  
Vijay M. Ravindra ◽  
Michael Karsy ◽  
Richard H. Schmidt ◽  
Philipp Taussky ◽  
Min S. Park ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
De Novo ◽  
Artery Aneurysm ◽  
Saccular Aneurysm ◽  
Left Middle Cerebral Artery ◽  
Vessel Occlusion ◽  
Aneurysm Neck ◽  
Aneurysm Formation ◽  
De Novo Aneurysm

The authors report the case of a previously healthy 6-month-old girl who presented with right arm and leg stiffening consistent with seizure activity. An initial CT scan of the head demonstrated acute subarachnoid hemorrhage in the basal cisterns extending into the left sylvian fissure. Computed tomography angiography demonstrated a 7 × 6 × 5–mm saccular aneurysm of the inferior M2 division of the left middle cerebral artery. The patient underwent left craniotomy and microsurgical clip ligation with wrapping of the aneurysm neck because the vessel appeared circumferentially dysplastic in the region of the aneurysm. Postoperative angiography demonstrated a small remnant, sluggish distal flow, but no significant cerebral vasospasm. Fifty-five days after the initial aneurysm rupture, the patient presented again with an acute intraparenchymal hemorrhage of the left anterior temporal lobe. Angiogram revealed a circumferentially dysplastic superior division of the M2 branch, with a new 5 × 4–mm saccular aneurysm distinct from the first, with 2 smaller aneurysms distal to the new ruptured aneurysm. Endovascular parent vessel occlusion with Onyx was performed. Genetic testing revealed a mutation of the MYH11. To the authors' knowledge, this is the first report of rapid de novo aneurysm formation in an infant with an MYH11 mutation. The authors review the patient's clinical presentation and management and comprehensively review the literature on this topic.

De novo distal posterior cerebral artery aneurysm

2003 ◽  
Vol 60 (6) ◽  
pp. 534-539 ◽  
Author(s):  
Hiroyuki Yoshioka ◽  
Takuhiro Hotta ◽  
Eiji Taniguchi ◽  
Naomi Hashimoto ◽  
Yasuyuki Kinoshita ◽  
...  
Keyword(s):  
Cerebral Artery ◽  
De Novo ◽  
Posterior Cerebral Artery ◽  
Artery Aneurysm ◽  
Cerebral Artery Aneurysm

scholarly journals A Rare Case ofStreptococcus alactolyticusInfective Endocarditis Complicated by Septic Emboli and Mycotic Left Middle Cerebral Artery Aneurysm

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Patricia Almeida ◽  
Jaclyn Railsback ◽  
James Benjamin Gleason
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Artery Aneurysm ◽  
Ventricular Outflow Tract ◽  
Left Ventricular ◽  
Left Middle Cerebral Artery ◽  
Middle Cerebral Artery Aneurysm ◽  
Microsurgical Clipping ◽  
Cerebral Artery Aneurysm ◽  
Left Middle

To date,S. alactolyticusendocarditis complicated by middle cerebral artery aneurysm has not been reported. We describe the case of a 65-year-old female with a history of hypertrophic cardiomyopathy with left ventricular outflow tract obstruction presenting with confusion and a apical holosystolic murmur. Angiography of the brain identified new bilobed left middle cerebral artery aneurysm. Serial blood cultures grewS. alactolyticus, and aortic and mitral valve vegetation were discovered on transesophageal echocardiography. The patient was treated with antimicrobial therapy, mitral and aortic valve replacements, and microsurgical clipping of cerebral aneurysm. This case serves to highlight the pathogenicity of a sparsely described bacterium belonging to the heterogenousS. boviscomplex.

De novo giant posterior cerebral artery aneurysm developing 25 years after basilar bifurcation aneurysm treatment using a Drake tourniquet: case report and implications for aneurysm follow-up

2018 ◽  
Vol 128 (4) ◽  
pp. 1028-1031
Author(s):  
Rafael Martinez-Perez ◽  
David M. Pelz ◽  
Stephen P. Lownie
Keyword(s):  
Cerebral Artery ◽  
De Novo ◽  
Posterior Cerebral Artery ◽  
Rare Complication ◽  
Young Patients ◽  
Artery Aneurysm ◽  
First Case ◽  
Bifurcation Aneurysm ◽  
De Novo Aneurysm

The objective of this paper was to report a rare complication of basilar artery (BA) tourniquet treatment of a giant basilar tip aneurysm, and to discuss possible causes for the formation of a de novo giant posterior cerebral artery (PCA) aneurysm. A 34-year-old woman underwent satisfactory treatment of a ruptured giant basilar bifurcation aneurysm by BA ligation (Drake tourniquet) in 1985. She presented 25 years later with a new aneurysm in the left PCA, successfully treated by coil embolization. To the authors’ knowledge, this is the first case of de novo aneurysm formation on a PCA, and the first de novo aneurysm reported as a complication of BA ligation therapy by Drake tourniquet. Long-term follow-up is necessary in patients with treated cerebral aneurysms, particularly those occurring in young patients, those with multiple aneurysms, those with complex posterior circulation aneurysms, and those undergoing flow diversion or flow-altering therapies.

De novo formation and rupture of an azygos pericallosal artery aneurysm

2000 ◽  
Vol 93 (6) ◽  
pp. 1062-1064 ◽  
Author(s):  
Wolfgang Dietrich ◽  
Andrea Reinprecht ◽  
Andreas Gruber ◽  
Thomas Czech
Keyword(s):  
De Novo ◽  
Artery Aneurysm ◽  
Vascular Anomaly ◽  
Content Type ◽  
Pericallosal Artery ◽  
Bifurcation Aneurysm ◽  
Anterior Cerebral Artery Aneurysm ◽  
Cerebral Artery Aneurysm ◽  
Familial Aneurysms

✓ An azygos pericallosal artery (APCA) aneurysm is a rare anomaly that is closely associated with saccular aneurysms. This is the earliest report to document de novo formation and rupture of an aneurysm at the bifurcation of an unpaired pericallosal trunk. The authors report the case of a woman who presented at the age of 52 years with subarachnoid hemorrhage (SAH) from the rupture of a newly formed APCA bifurcation aneurysm, 7 years after she had undergone surgery to clip a ruptured anterior cerebral artery aneurysm. De novo formation of aneurysms after SAH rarely occurs and certain risk factors like multiple and familial aneurysms, arterial hypertension, or smoking have been postulated. Late follow-up examination with angiography to detect de novo aneurysms should be considered in patients with this vascular anomaly after SAH.

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