De novo formation and rupture of an aneurysm

2002 ◽  
Vol 97 (3) ◽  
pp. 697-700 ◽  
Author(s):  
Takao Yasuhara ◽  
Takashi Tamiya ◽  
Kenji Sugiu ◽  
Satoshi Inoue ◽  
Takashi Ohmoto
Keyword(s):  
Internal Carotid ◽  
De Novo ◽  
Short Interval ◽  
Anterior Communicating Artery ◽  
Left Internal Carotid Artery ◽  
Content Type ◽  
Aged Woman ◽  
Middle Aged Woman ◽  
De Novo Aneurysm ◽  
Insight Into

✓ The authors describe a case of de novo formation and rupture of an aneurysm located at the junction of the left internal carotid artery and the superior hypophyseal artery in a middle-aged woman 2 months after another aneurysm, located on the anterior communicating artery, had been clipped. This case is rare because of the short interval between the last angiographic study performed at the first operation and the diagnosis of the de novo aneurysm; in this case the interval was only 47 days, compared with other cases in the literature in which the intervals were 3 to 34 years. Aneurysms can enlarge considerably in 2 to 4 weeks and can rupture at or soon after their formation. This case provides insight into aneurysm formation and rupture.

Persistent Trigeminal Artery as a Cause of Dizziness

1997 ◽  
Vol 76 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Robert A. Battista ◽  
Jed A. Kwartler ◽  
Daniel M. Martinez
Keyword(s):  
Carotid Artery ◽  
Internal Carotid ◽  
Carotid Artery Disease ◽  
Persistent Trigeminal Artery ◽  
Vertebrobasilar Insufficiency ◽  
Trigeminal Artery ◽  
Aged Woman ◽  
Middle Aged Woman ◽  
Common Problems ◽  
Artery Disease

Complaints of vertigo and dizziness are common problems referred to otolaryngologists for evaluation. Awareness of uncommon causes of dizziness increases the physician's ability to diagnose and treat these patients. We present the case of a middle-aged woman who presented with episodes of vertigo and symptoms suggestive of vertebrobasilar insufficiency. These symptoms were the result of a persistent trigeminal artery (PTA) and occlusive carotid artery disease. A PTA is a carotid-basilar anastomosis that has been reported to be demonstrated on 0.1% to 0.6% of all cerebral angiograms. Persistence of this vessel usually leads to hypoplasia or agenesis of the ipsilateral posterior communicating artery, and leaves the internal carotid artery as the main source of blood supply to the region of the upper brainstem. The appearance and clinical significance of this unusual condition will be discussed.

Enlarged anterior spinal artery as collateral circulation

1974 ◽  
Vol 41 (3) ◽  
pp. 356-359 ◽  
Author(s):  
Jun Karasawa ◽  
Haruhiko Kikuchi ◽  
Seiji Furuse ◽  
Toshisuke Sakaki ◽  
Yasumasa Makita
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Collateral Circulation ◽  
Internal Carotid ◽  
Vascular Malformations ◽  
Anterior Spinal Artery ◽  
Left Internal Carotid Artery ◽  
Content Type ◽  
Vertebral Arteries ◽  
Fine Print

✓The authors report and discuss two cases in which collateral circulation could be angiographically demonstrated passing through the anterior spinal artery. Case 1 proved to have occlusions of the left internal carotid artery and both vertebral arteries. The basilar artery was visualized via the anterior spinal, the primitive trigeminal, and primitive otic arteries. The presence of multiple vascular malformations and an abnormal anterior spinal artery suggested that the latter had been functioning as collateral circulation since an embryonic stage. In Case 2, both internal carotids and both vertebral arteries were occluded by arteriosclerotic changes. It was assumed that the deleted anterior spinal artery visualized angiographically had developed into a collateral circulation with increasing age.

Hemangioma calcificans

1979 ◽  
Vol 50 (1) ◽  
pp. 110-114 ◽  
Author(s):  
Michael V. DiTullio ◽  
W. Eugene Stern
Keyword(s):  
Cerebral Angiography ◽  
Previous History ◽  
Rare Entity ◽  
Content Type ◽  
Aged Woman ◽  
Pathological Evaluation ◽  
Middle Aged Woman ◽  
History Of ◽  
The Masses ◽  
Fine Print

✓ A middle-aged woman, with a previous history of medically suppressed absence attacks, presented with mild changes in mental status and a skull film demonstrating several areas of mottled, granular, intracranial calcifications. These lesions, although readily visible on computerized tomography, appeared avascular during the course of cerebral angiography. At the time of surgery the masses, which were densely calcified and generally circular, demonstrated numerous areas of superficial, white, verrucous excrescences. Microscopic, pathological evaluation confirmed the diagnosis of hemangioma calcificans. The literature describing this rare entity is briefly reviewed.

scholarly journals Versatility in Corrinoid Salvaging and Remodeling Pathways Supports Corrinoid-Dependent Metabolism in Dehalococcoides mccartyi

2012 ◽  
Vol 78 (21) ◽  
pp. 7745-7752 ◽  
Author(s):  
Shan Yi ◽  
Erica C. Seth ◽  
Yu-Jie Men ◽  
Sally P. Stabler ◽  
Robert H. Allen ◽  
...  
Keyword(s):  
De Novo ◽  
Chlorinated Solvents ◽  
Axial Ligand ◽  
Content Type ◽  
Dehalococcoides Mccartyi ◽  
Axial Ligands ◽  
The Common ◽  
Enzyme Cofactors ◽  
Lower Ligand ◽  
Insight Into

ABSTRACTCorrinoids are cobalt-containing molecules that function as enzyme cofactors in a wide variety of organisms but are produced solely by a subset of prokaryotes. Specific corrinoids are identified by the structure of their axial ligands. The lower axial ligand of a corrinoid can be a benzimidazole, purine, or phenolic compound. Though it is known that many organisms obtain corrinoids from the environment, the variety of corrinoids that can serve as cofactors for any one organism is largely unstudied. Here, we examine the range of corrinoids that function as cofactors for corrinoid-dependent metabolism inDehalococcoides mccartyistrain 195.Dehalococcoidesbacteria play an important role in the bioremediation of chlorinated solvents in the environment because of their unique ability to convert the common groundwater contaminants perchloroethene and trichloroethene to the innocuous end product ethene. All isolatedD. mccartyistrains require exogenous corrinoids such as vitamin B12for growth. However, like many other corrinoid-dependent bacteria, none of the well-characterizedD. mccartyistrains has been shown to be capable of synthesizing corrinoidsde novo. In this study, we investigate the ability ofD. mccartyistrain 195 to use specific corrinoids, as well as its ability to modify imported corrinoids to a functional form. We show that strain 195 can use only specific corrinoids containing benzimidazole lower ligands but is capable of remodeling other corrinoids by lower ligand replacement when provided a functional benzimidazole base. This study of corrinoid utilization and modification byD. mccartyiprovides insight into the array of strategies that microorganisms employ in acquiring essential nutrients from the environment.

Carotid-anterior cerebral artery anastomosis

1976 ◽  
Vol 44 (3) ◽  
pp. 378-382 ◽  
Author(s):  
Stephen Nutik ◽  
Domenico Dilenge
Keyword(s):  
Optic Nerve ◽  
Cerebral Artery ◽  
Ophthalmic Artery ◽  
Internal Carotid ◽  
Anterior Cerebral Artery ◽  
Optic Chiasm ◽  
Anterior Communicating Artery ◽  
Content Type ◽  
Anatomical Features ◽  
Fine Print

✓ The angiographic and anatomical features of an anomalous communication between the intradural internal carotid artery and the anterior cerebral artery are described. Essential features of the anastomosis include an origin at, or close to, the origin of the ophthalmic artery, a course ventral to the ipsilateral optic nerve and anterior to the optic chiasm, and a termination near the anterior communicating artery. Although rare, the condition should be considered as an entity. The incidence of associated berry aneurysm and other congenital vascular anomalies is high.

De Novo Development of an Aneurysm: Case Report

Neurosurgery ◽  
1991 ◽  
Vol 29 (5) ◽  
pp. 756-759 ◽  
Author(s):  
Robin F. Koeleveld ◽  
Carl B. Heilman ◽  
Richard P. Klucznik ◽  
William A. Shucart
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
De Novo ◽  
Young Patients ◽  
Left Internal Carotid Artery ◽  
Anterior Choroidal Artery ◽  
Anterior Choroidal ◽  
Choroidal Artery

Abstract A case of the de novo formation of an aneurysm in a young woman is presented. At age 13 years, she had a spontaneous subarachnoid hemorrhage. Cerebral angiography showed an aneurysm of the bifurcation of the left internal carotid artery and a small aneurysm of the left anterior choroidal artery. At surgery, the aneurysm of the internal carotid artery was clipped, and the aneurysm of the left anterior choroidal artery was wrapped with muslin. Thirteen years later, the patient had another subarachnoid hemorrhage. Cerebral arteriography showed four aneurysms that had developed at previously angiographically normal sites. This case suggests that young patients with aneurysms might benefit from follow-up angiography in search of late aneurysm formation.

The incidence and treatment of asymptomatic, unruptured cerebral aneurysms

1994 ◽  
Vol 80 (2) ◽  
pp. 217-223 ◽  
Author(s):  
Toshio Nakagawa ◽  
Kazuo Hashi
Keyword(s):  
Early Detection ◽  
Internal Carotid ◽  
Cerebral Aneurysms ◽  
Maximum Diameter ◽  
Anterior Communicating Artery ◽  
Content Type ◽  
Unruptured Aneurysms ◽  
Unruptured Intracranial Aneurysms ◽  
History Of ◽  
Unruptured Cerebral Aneurysms

✓ The importance of early detection by various radiological techniques of asymptomatic, unruptured aneurysms as a means of preventing subarachnoid hemorrhage (SAH) is discussed in this report. Four hundred volunteers underwent clinical and radiological evaluations between March, 1988, and September, 1992. Studies included a neurological examination as well as digital subtraction cerebral angiography via a femoral arterial catheter, computerized tomography, T1- and T2-weighted magnetic resonance (MR) imaging of the whole brain, and MR angiography. The evaluation revealed 27 asymptomatic, unruptured intracranial aneurysms in 26 volunteers, for an incidence of 6.5%. The subjects ranged in age from 39 to 71 years, with an average of 55 years. The aneurysms were located on the internal carotid artery in 13 cases (48%), the anterior communicating artery in six (22%), the middle cerebral artery in six (22%), and the basilar artery in two (7%). Aneurysms ranged in size from 5 mm or less in 16 cases, 6 to 10 mm in nine, and 11 to 15 mm in one; one aneurysm was more than 15 mm, with a maximum diameter of 2 cm. Volunteers with a family history of SAH within the second degree of consanguinity showed a higher incidence of aneurysms (17.9%). Aneurysm clipping was performed on 20 of the 26 cases with no significant morbidity or mortality. These findings support the contention that aggressive early detection of unruptured aneurysms may improve the outcome in patients harboring cerebral aneurysms by preventing the devastating effects of SAH.

scholarly journals Necessity of follow-up cerebral digital subtraction angiography after endovascular coiling or microsurgical cliping of ruptured intracranial aneurysms to exclude de novo or aneurysmal regrow and avoid its rupture: report of 2 cases

2019 ◽  
Vol 27 (1) ◽  
pp. 12-20
Author(s):  
D.J. Gunia ◽  
E.T. Ekvtimishvili ◽  
G.Z. Basiladze
Keyword(s):  
Digital Subtraction Angiography ◽  
Intracranial Aneurysms ◽  
De Novo ◽  
Anterior Communicating Artery ◽  
Digital Subtraction ◽  
Treatment Results ◽  
First Case ◽  
De Novo Aneurysm ◽  
Brain Aneurysms

Objective – to improve treatment results of patients with ruptured brain aneurysms using follow-up cerebral digital subtraction angiography to avoid de novo or aneurismal regrow.Materials and methods. Analysis of follow-up cerebral digital subtraction angiography and treatment results of two patient (60 and 64-year-old females) with brain anterior communicated artery de novo aneurysm and regrowed aneurysm of an anterior communicated artery after microsurgical clipping.Results. Two patient underwent endovascular treatment of ruptured brain aneurysms after non follow-up cerebral digital subtraction angiography. In first case de novo aneurysm of anterior communicating artery and in second – regrowed aneurys of anterior communicating artery after surgical clipping. Both patients were discharged from the clinic in I and IV modified Rankin scale. Conclusions. Digital subtraction angiography follow-up of intracranial aneurysms treated by endovascular or microsurgical approach is important for the detection and prediction for the risk of bleeding (aneurysm recurrence and de novo aneurysm). There exist no guidelines on the frequency of monitoring and imaging modality to adopt and the monitoring is adapted on a case-by-case basis. Digital subtraction angiography is the gold standard for the evaluation of aneurysmal occlusion after coiling and microsurgical clipping and remains also necessary for evaluating other devices.

Sign in / Sign up

Export Citation Format

Share Document