Anomalous subarcuate loop

1991 ◽  
Vol 75 (6) ◽  
pp. 985-986 ◽  
Author(s):  
Atul Goel ◽  
Laligam N. Sekhar
Keyword(s):  
Posterior Fossa ◽  
Anterior Inferior Cerebellar Artery ◽  
Content Type ◽  
Cerebellar Artery ◽  
Fine Print

✓ An anomalous subarcuate loop of the anterior inferior cerebellar artery is described in which the artery is adherent to or penetrates the posterior fossa dura in the subarcuate fossa. When encountered during acoustic neurilemoma surgery, the artery should be carefully mobilized along with a sleeve of dura to prevent its injury.

Distal anterior inferior cerebellar artery aneurysms

2002 ◽  
Vol 97 (3) ◽  
pp. 692-696 ◽  
Author(s):  
Eric L. Zager ◽  
Ellen G. Shaver ◽  
Robert W. Hurst ◽  
Eugene S. Flamm
Keyword(s):  
Artery Aneurysm ◽  
Distal Segment ◽  
Anterior Inferior Cerebellar Artery ◽  
Management Options ◽  
Content Type ◽  
Von Hippel Lindau ◽  
Cerebellar Artery ◽  
Distal Branch ◽  
Acute Subarachnoid Hemorrhage ◽  
Fine Print

✓ Aneurysms of the distal anterior inferior cerebellar artery (AICA) are rare; fewer than 100 cases have been reported. The authors detail their experience with four cases and present endovascular as well as microsurgical management options. The medical records and neuroimaging studies obtained in four patients who were treated at a single institution were reviewed. Clinical presentations, neuroimaging and intraoperative findings, and clinical outcomes were analyzed. There were three men and one woman; their mean age was 43 years. Two patients presented with acute subarachnoid hemorrhage (SAH), and two presented with ataxia and vertigo (one with tinnitus, the other with hearing loss). Angiographic studies demonstrated aneurysms of the distal segment of the AICA. In one patient with von Hippel—Lindau syndrome and multiple cerebellar hemangioblastomas, a feeding artery aneurysm was found on a distal branch of the AICA. Three of the patients underwent successful surgical obliteration of their aneurysms, one by clipping, one by trapping, and one by resection along with the tumor. The fourth patient underwent coil embolization of the distal AICA and the aneurysm. All patients made an excellent neurological recovery. Patients with aneurysms in this location may present with typical features of an acute SAH or with symptoms referable to the cerebellopontine angle. Evaluation with computerized tomography, magnetic resonance (MR) imaging, MR angiography, and digital subtraction angiography should be performed. For lesions distal to branches coursing to the brainstem, trapping and aneurysm resection are viable options that do not require bypass. Endovascular obliteration is also a reasonable option, although the possibility of retrograde thrombosis of the AICA is a concern.

Traumatic false aneurysm of the superior cerebellar artery simulating posterior fossa tumor

1977 ◽  
Vol 46 (3) ◽  
pp. 377-380 ◽  
Author(s):  
H. Howard Cockrill ◽  
John P. Jimenez ◽  
John A. Goree
Keyword(s):  
Posterior Fossa ◽  
False Aneurysm ◽  
Superior Cerebellar Artery ◽  
Content Type ◽  
Specific Diagnosis ◽  
Cerebellar Artery ◽  
Brain Scan ◽  
The Right ◽  
Angiographic Findings ◽  
Fine Print

✓ An example of traumatic false aneurysm of the right superior cerebellar artery is described. The chronicity of the clinical picture and a positive brain scan strongly suggested a posterior fossa neoplasm; however, the angiographic findings permitted a specific diagnosis to be made.

Treatment of aneurysms by excision or trapping with arterial reimplantation or interpositional grafting

1996 ◽  
Vol 85 (1) ◽  
pp. 178-185 ◽  
Author(s):  
Sang Youl Lee ◽  
Laligam N. Sekhar
Keyword(s):  
Superficial Temporal Artery ◽  
Posterior Inferior Cerebellar Artery ◽  
Giant Aneurysm ◽  
Temporal Artery ◽  
Left Vertebral Artery ◽  
Anterior Inferior Cerebellar Artery ◽  
Content Type ◽  
First Case ◽  
Cerebellar Artery ◽  
Fine Print

✓ The authors report three cases of ruptured, large or giant aneurysms that were treated by excision or trapping, followed by revascularization of distal vessels by means of arterial reimplantation or superficial temporal artery interpositional grafting. In the first case, a large serpentine aneurysm arising from the anterior temporal branch of the right middle cerebral artery (MCA) was excised and the distal segment of the anterior temporal artery was reimplanted into one of the branches of the MCA. In the second case, a giant aneurysm, fusiform in shape, arose from the rolandic branch of the MCA. This aneurysm was totally excised and the M3 branch in which it had been contained was reconstructed with an arterial interpositional graft. In the third case the patient, who presented with a subarachnoid hemorrhage, had a dissecting aneurysm that involved the distal portion of the left vertebral artery. In this case the posterior inferior cerebellar artery (PICA) arose from the wall of the aneurysm and coursed onward to supply the brainstem. This aneurysm was managed by trapping and the PICA was reimplanted into the ipsilateral large anterior inferior cerebellar artery. None of the patients suffered a postoperative stroke and all recovered to a good or excellent postoperative condition. These techniques allowed complete isolation of the aneurysm from the normal blood circulation and preserved the blood flow through the distal vessel that came out of the aneurysm. These techniques should be considered as alternatives when traditional means of cerebral revascularization are not feasible.

Anterior inferior cerebellar artery aneurysm

1983 ◽  
Vol 59 (4) ◽  
pp. 697-702 ◽  
Author(s):  
Akira Nishimoto ◽  
Shunichiro Fujimoto ◽  
Shoji Tsuchimoto ◽  
Yuzo Matsumoto ◽  
Kazuo Tabuchi ◽  
...  
Keyword(s):  
Surgical Procedures ◽  
Cerebellopontine Angle ◽  
Artery Aneurysm ◽  
Anterior Inferior Cerebellar Artery ◽  
Content Type ◽  
Aneurysm Neck ◽  
The Third ◽  
Suboccipital Craniectomy ◽  
Cerebellar Artery ◽  
Fine Print

✓ Three cases of aneurysms of the anterior inferior cerebellar artery are reported. Two of the aneurysms were located in the cerebellopontine angle and one in the ventral portion of the pons. Through a suboccipital craniectomy, neck clipping was perfomed on one aneurysm, neck ligation on another, and coating on the third. A discussion of the surgical procedures and complications includes a review of previous reports.

Aneurysm in the internal auditory meatus

1971 ◽  
Vol 35 (5) ◽  
pp. 605-609 ◽  
Author(s):  
Tomokatsu Hori ◽  
Kimiyoshi Hirakawa ◽  
Buichi Ishijima ◽  
Shinya Manaka ◽  
Takanori Fukushima ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Anterior Inferior Cerebellar Artery ◽  
Internal Auditory Meatus ◽  
Content Type ◽  
Cerebellar Artery ◽  
Fine Print

✓ The successful surgical treatment of an intrameatal aneurysm is reported, and the signs, symptoms, and neurootological findings discussed. Anatomical consideration of the course of the anterior inferior cerebellar artery and origin of internal auditory artery are emphasized.

Angiographic differentiation between Dandy-Walker cyst and arachnoid cyst of the posterior fossa in newborn infants and children

1973 ◽  
Vol 38 (3) ◽  
pp. 298-308 ◽  
Author(s):  
Emanuele La Torre ◽  
Aldo Fortuna ◽  
Emanuele Occhipinti
Keyword(s):  
Posterior Fossa ◽  
Arachnoid Cyst ◽  
Posterior Inferior Cerebellar Artery ◽  
Newborn Infants ◽  
Infants And Children ◽  
Arachnoid Cysts ◽  
Content Type ◽  
Dural Sinuses ◽  
Cerebellar Artery ◽  
Fine Print

✓ Elevation of the tentorium and its dural sinuses, originally considered a diagnostic sign of Dandy-Walker cyst, may also occur in arachnoid cysts of the posterior fossa. Differentiation between these two lesions may be achieved angiographically by the evaluation of the posterior inferior cerebellar artery and its vermian branch, and of the inferior vermian vein. All these vessels are displaced forward and upward by an arachnoid cyst, while in the Dandy-Walker cyst the posterior inferior cerebellar artery is miniature and the vermian branch and the inferior vermian vein are absent.

An intracranial aneurysm on the feeding artery of a cerebellar hemangioblastoma

1999 ◽  
Vol 91 (1) ◽  
pp. 136-138 ◽  
Author(s):  
Raphael Guzman ◽  
M. Sean Grady
Keyword(s):  
Acute Onset ◽  
Anterior Inferior Cerebellar Artery ◽  
Loss Of Consciousness ◽  
Arterial Aneurysm ◽  
Feeding Artery ◽  
Total Excision ◽  
Content Type ◽  
Cerebellar Hemangioblastoma ◽  
Cerebellar Artery ◽  
Fine Print

✓ A case of cerebellar hemangioblastoma with a coexistent arterial aneurysm on the feeding artery of the tumor is reported. The patient presented with an acute onset of headache, loss of consciousness, and left-sided hemiparesis due to a posterior fossa hemorrhage found adjacent to a hemangioblastoma. Four-vessel angiography revealed an aneurysm on the anterior inferior cerebellar artery (AICA), which was the main feeding vessel of the hemangioblastoma. Successful total excision of the hemangioblastoma and clipping of the AICA aneurysm achieved in a one-stage operation was demonstrated on postoperative angiography.

Detailed magnetic resonance imaging anatomy of the cisternal segment of the abducent nerve: Dorello's canal and neurovascular relationships and landmarks

1999 ◽  
Vol 91 (2) ◽  
pp. 276-283 ◽  
Author(s):  
Indra Yousry ◽  
Salvador Camelio ◽  
Martin Wiesmann ◽  
Urs D. Schmid ◽  
Bernhard Moriggl ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Mr Imaging ◽  
Three Dimensional ◽  
Anterior Inferior Cerebellar Artery ◽  
Content Type ◽  
Dorello’S Canal ◽  
Imaging Sequence ◽  
Cerebellar Artery ◽  
Abducent Nerve ◽  
Fine Print

Object. The goal of this study was to identify reliably the cisternal segment of the abducent nerve by using the three-dimensional Fourier transform constructive interference in steady-state (3-D CISS) magnetic resonance (MR) imaging sequence to define landmarks that assist in the identification of the abducent nerve on MR imaging and to describe the nerve's relationship to the anterior inferior cerebellar artery (AICA).Methods. A total of 26 volunteers underwent 3-D CISS MR imaging, and 10 of these volunteers also underwent MR angiography in which a time-of-flight sequence was used to identify the facial colliculus, the abducent nerve and its apparent origin, Dorello's canal, and the AICA.The authors identified the abducent nerve with certainty in 96% of 3-D CISS sequences obtained in the axial and sagittal planes and in 94% obtained in the coronal plane. The nerve emerged from the pontomedullary sulcus in 94% of cases. The facial colliculus could always be identified, and Dorello's canal was identified in 94% of cases. In 76.6% of cases, the abducent nerve was seen to contact the AICA, which passed inferior to the nerve in 63.8% of cases and superior to it in 29.8%.Conclusions. The anatomical course of the abducent nerve and its relationship to the AICA and other blood vessels can be reliably identified using a 3-D CISS MR sequence with the facial colliculus and Dorello's canal serving as landmarks.

Transoral transclival clipping of anterior inferior cerebellar artery aneurysm using new rotating applier

1991 ◽  
Vol 75 (3) ◽  
pp. 483-485 ◽  
Author(s):  
H. Alan Crockard ◽  
Turgut Koksel ◽  
Nigel Watkin
Keyword(s):  
Basilar Artery ◽  
Artery Aneurysm ◽  
Transoral Surgery ◽  
Anterior Inferior Cerebellar Artery ◽  
Content Type ◽  
Aneurysm Clip ◽  
Dural Closure ◽  
Cerebellar Artery ◽  
Fine Print

✓ A large, partly calcified aneurysm buried in the pons and arising from the junction of the basilar artery and the anterior inferior cerebellar artery was successfully occluded using a variangle aneurysm clip with a new rotating pistol-grip applier which allowed transoral access. The authors believe that the new applier, used in association with the current techniques for dural closure, allows for safe transoral surgery for basilar aneurysms.

Arteriovenous malformations in the posterior fossa

1977 ◽  
Vol 47 (1) ◽  
pp. 50-56 ◽  
Author(s):  
Hiroshi Matsumura ◽  
Yasumasa Makita ◽  
Kuniyuki Someda ◽  
Akinori Kondo
Keyword(s):  
Arteriovenous Malformation ◽  
Brain Stem ◽  
Posterior Fossa ◽  
Arteriovenous Malformations ◽  
Cerebellopontine Angle ◽  
Anterior Part ◽  
Content Type ◽  
The Brain ◽  
Fine Print

✓ We have operated on 12 of 14 cases of arteriovenous malformation (AVM) in the posterior fossa since 1968, with one death. The lesions were in the cerebellum in 10 cases (three anteromedial, one central, three lateral, and three posteromedial), and in the cerebellopontine angle in two; in two cases the lesions were directly related to the brain stem. The AVM's in the anterior part of the cerebellum were operated on through a transtentorial occipital approach.

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