Multiple false localizing signs in intracranial tumor

1974 ◽  
Vol 40 (2) ◽  
pp. 264-266 ◽  
Author(s):  
Andrew R. Turnbull
Keyword(s):  
Cranial Nerve ◽  
Intracranial Tumor ◽  
Content Type ◽  
Cerebellar Hemangioblastoma ◽  
Mode Of Presentation ◽  
Cranial Nerve Palsies ◽  
Fine Print

✓ A case of cerebellar hemangioblastoma is presented in which multiple false localizing signs caused difficulty in the clinical localization of the lesion. The mode of presentation and pathogenesis of these signs are briefly discussed, and the observation made that the ninth and tenth cranial nerve palsies recorded in this case rarely lead to false localization.

Recurrent subarachnoid hemorrhage complicating cerebral arterial ectasia

1981 ◽  
Vol 55 (1) ◽  
pp. 139-142 ◽  
Author(s):  
Steven J. Goldstein ◽  
Phillip A. Tibbs
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Cranial Nerve ◽  
Review Of The Literature ◽  
Radiographic Findings ◽  
Content Type ◽  
Clinical Complications ◽  
Cranial Nerve Palsies ◽  
Arterial Ectasia ◽  
Fine Print

✓ A case of subarachnoid hemorrhage (SAH) complicating cerebral arterial ectasia is reported. While ischemia and cranial nerve palsies are commonly associated with this condition, review of the literature reveals that SAH is exceedingly rare. The pathogenesis, radiographic findings, and clinical complications of cerebral arterial ectasia are discussed.

Transsphenoidal approach to infrasellar tumors involving the cavernous sinus

1990 ◽  
Vol 73 (4) ◽  
pp. 513-517 ◽  
Author(s):  
Nobuo Hashimoto ◽  
Haruhiko Kikuchi
Keyword(s):  
Cavernous Sinus ◽  
Cranial Nerve ◽  
Cranial Nerves ◽  
Transsphenoidal Approach ◽  
Skull Base Tumors ◽  
Content Type ◽  
Operating Field ◽  
Cranial Nerve Palsies ◽  
Operative Complications ◽  
Fine Print

✓ The authors review their 2-year experience with a rhinoseptal transsphenoidal approach to skull-base tumors of various pathologies involving both the sphenoid and cavernous sinuses. Eight patients with cranial nerve palsies attributable to compression of the contents of the cavernous sinus and/or optic canal are included in this report. Among these patients, a total of 17 cranial nerves were affected. Postoperative normalization was achieved in eight nerves, significant improvement in seven nerves, and no improvement in two nerves. There were no operative complications of aggravation of cranial nerve palsies in this series. In spite of the limited operating field, the results demonstrate the effectiveness and safety of this approach. The authors recommend that this approach be considered before more aggressive surgery is undertaken.

Complications of halo-pelvic traction

1976 ◽  
Vol 45 (6) ◽  
pp. 716-718 ◽  
Author(s):  
Rodney A. Rozario ◽  
Bennett M. Stein
Keyword(s):  
Blood Supply ◽  
Cranial Nerve ◽  
Cranial Nerves ◽  
Rapid Rate ◽  
Content Type ◽  
Cranial Nerve Palsies ◽  
Fine Print

✓ When halo-pelvic traction is applied at a rapid rate it may induce cranial nerve palsies. The sixth, ninth, and tenth cranial nerves appear to be the most vulnerable. A proposed etiology is the stretching of these nerves resulting in a compromised blood supply with a consequent temporary paralysis which usually improves within 8 to 10 weeks.

Transverse fracture of the clivus

1973 ◽  
Vol 39 (5) ◽  
pp. 610-614 ◽  
Author(s):  
Bob B. Sanders ◽  
Gary D. Vanderark
Keyword(s):  
Cranial Nerve ◽  
Young Patients ◽  
Clinical Findings ◽  
Horner’S Syndrome ◽  
Transverse Fracture ◽  
Radiological Findings ◽  
Horner's Syndrome ◽  
Content Type ◽  
Cranial Nerve Palsies ◽  
Fine Print

✓ Three young patients with transverse fracture of the clivus exhibited clinical findings of progressive cranial nerve palsies associated with a Horner's syndrome. Clinical and radiological findings of this syndrome are described.

Meningiomas of the clivus and apical petrous bone

1986 ◽  
Vol 65 (2) ◽  
pp. 160-167 ◽  
Author(s):  
Marc R. Mayberg ◽  
Lindsay Symon
Keyword(s):  
Cranial Nerve ◽  
Clinical Status ◽  
Surgical Techniques ◽  
Petrous Bone ◽  
External Carotid ◽  
Total Resection ◽  
Content Type ◽  
Presenting Symptoms ◽  
Cranial Nerve Palsies ◽  
Fine Print

✓ Between March, 1966, and June, 1985, 23 women and 12 men underwent partial or total resection of apical petrous or clivus meningiomas at The National Hospital for Nervous Diseases. Presenting symptoms were typically of long duration (mean 29 months) and consisted primarily of gait disturbance, headache, hearing loss, and facial pain. Cranial nerve deficits, especially affecting the fifth, seventh, and eighth nerves, were observed in nearly every patient. Tumor size, but not location, was generally associated with degree of preoperative disability. Plain skull films were usually unremarkable, but computerized tomography (CT) proved highly accurate in determining tumor location and size. A characteristic pattern of vascular displacement was seen on vertebral angiograms, although blood supply to the tumors was derived primarily from branches of the internal and external carotid arteries. Subtotal or total resection was undertaken in all cases; nine patients required adjunctive cerebrospinal fluid shunting procedures. Although surgical techniques evolved during the course of the 20-year study, a combined supra- and infratentorial approach proved a relatively safe and effective means of surgical treatment. New or worsened postoperative deficits, especially cranial nerve palsies, and complications in the immediate postoperative period frequently resulted in temporary deterioration of the clinical status during this period; the total operative mortality rate was 9%. Follow-up periods ranged up to 9 years; 70% of patients resumed an independent existence, and none is known to have required subsequent tumor surgery. The size of the lesion was the only significant factor in determining outcome. These data suggest that meningiomas of the clivus and apical petrous bone can be accurately diagnosed by CT and three-vessel angiography, and effectively treated by microsurgical resection.

Multiple cranial nerve palsies due to a hyperextension injury to the cervical spine

1984 ◽  
Vol 61 (1) ◽  
pp. 172-173 ◽  
Author(s):  
Louis Rosa ◽  
Mark Carol ◽  
Roberto Bellegarrigue ◽  
Thomas B. Ducker
Keyword(s):  
Spinal Cord ◽  
Cervical Spine ◽  
Cranial Nerve ◽  
Content Type ◽  
Hyperextension Injury ◽  
Cranial Nerve Palsies ◽  
Multiple Cranial Nerve ◽  
Fine Print

✓ The case of a patient with multiple bilateral cranial nerve palsies and spinal cord sparing secondary to a stable hyperextension injury to C-1 is presented.

Stereotactic radiotherapy for the treatment of acoustic neuromas

2004 ◽  
Vol 101 (Supplement3) ◽  
pp. 362-372 ◽  
Author(s):  
Michael T. Selch ◽  
Alessandro Pedroso ◽  
Steve P. Lee ◽  
Timothy D. Solberg ◽  
Nzhde Agazaryan ◽  
...  
Keyword(s):  
Stereotactic Radiotherapy ◽  
Tumor Size ◽  
Cranial Nerve ◽  
Target Volume ◽  
Tumor Control ◽  
Content Type ◽  
Seventh Cranial Nerve ◽  
Acoustic Neuromas ◽  
Fine Print

Object. The authors sought to assess the safety and efficacy of stereotactic radiotherapy when using a linear accelerator equipped with a micromultileaf collimator for the treatment of patients with acoustic neuromas. Methods. Fifty patients harboring acoustic neuromas were treated with stereotactic radiotherapy between September 1997 and June 2003. Two patients were lost to follow-up review. Patient age ranged from 20 to 76 years (median 59 years), and none had neurofibromatosis. Forty-two patients had useful hearing prior to stereotactic radiotherapy. The fifth and seventh cranial nerve functions were normal in 44 and 46 patients, respectively. Tumor volume ranged from 0.3 to 19.25 ml (median 2.51 ml). The largest tumor dimension varied from 0.6 to 4 cm (median 2.2 cm). Treatment planning in all patients included computerized tomography and magnetic resonance image fusion and beam shaping by using a micromultileaf collimator. The planning target volume included the contrast-enhancing tumor mass and a margin of normal tissue varying from 1 to 3 mm (median 2 mm). All tumors were treated with 6-MV photons and received 54 Gy prescribed at the 90% isodose line encompassing the planning target volume. A sustained increase greater than 2 mm in any tumor dimension was defined as local relapse. The follow-up duration varied from 6 to 74 months (median 36 months). The local tumor control rate in the 48 patients available for follow up was 100%. Central tumor hypodensity occurred in 32 patients (67%) at a median of 6 months following stereotactic radiotherapy. In 12 patients (25%), tumor size increased 1 to 2 mm at a median of 6 months following stereotactic radiotherapy. Increased tumor size in six of these patients was transient. In 13 patients (27%), tumor size decreased 1 to 14 mm at a median of 6 months after treatment. Useful hearing was preserved in 39 patients (93%). New facial numbness occurred in one patient (2.2%) with normal fifth cranial nerve function prior to stereotactic radiotherapy. New facial palsy occurred in one patient (2.1%) with normal seventh cranial nerve function prior to treatment. No patient's pretreatment dysfunction of the fifth or seventh cranial nerve worsened after stereotactic radiotherapy. Tinnitus improved in six patients and worsened in two. Conclusions. Stereotactic radiotherapy using field shaping for the treatment of acoustic neuromas achieves high rates of tumor control and preservation of useful hearing. The technique produces low rates of damage to the fifth and seventh cranial nerves. Long-term follow-up studies are necessary to confirm these findings.

Contralateral motor rootlets and ipsilateral nerve transfers in brachial plexus reconstruction

2004 ◽  
Vol 101 (5) ◽  
pp. 770-778 ◽  
Author(s):  
Jayme Augusto Bertelli ◽  
Marcos Flávio Ghizoni
Keyword(s):  
Brachial Plexus ◽  
Ulnar Nerve ◽  
Phrenic Nerve ◽  
Cranial Nerve ◽  
External Rotation ◽  
Elbow Flexion ◽  
Content Type ◽  
Nerve Transfers ◽  
Contralateral Motor ◽  
Fine Print

Object. The goal of this study was to evaluate outcomes in patients with brachial plexus avulsion injuries who underwent contralateral motor rootlet and ipsilateral nerve transfers to reconstruct shoulder abduction/external rotation and elbow flexion. Methods. Within 6 months after the injury, 24 patients with a mean age of 21 years underwent surgery in which the contralateral C-7 motor rootlet was transferred to the suprascapular nerve by using sural nerve grafts. The biceps motor branch or the musculocutaneous nerve was repaired either by an ulnar nerve fascicular transfer or by transfer of the 11th cranial nerve or the phrenic nerve. The mean recovery in abduction was 90° and 92° in external rotation. In cases of total palsy, only two patients recovered external rotation and in those cases mean external rotation was 70°. Elbow flexion was achieved in all cases. In cases of ulnar nerve transfer, the muscle scores were M5 in one patient, M4 in six patients, and M3+ in five patients. Elbow flexion repair involving the use of the 11th cranial nerve resulted in a score of M3+ in five patients and M4 in two patients. After surgery involving the phrenic nerve, two patients received a score of M3+ and two a score of M4. Results were clearly better in patients with partial lesions and in those who were shorter than 170 cm (p < 0.01). The length of the graft used in motor rootlet transfers affected only the recovery of external rotation. There was no permanent injury at the donor sites. Conclusions. Motor rootlet transfer represents a reliable and potent neurotizer that allows the reconstruction of abduction and external rotation in partial injuries.

Targeting the cranial nerve: microradiosurgery for trigeminal neuralgia with CISS and 3D-Flash MR imaging sequences

2005 ◽  
Vol 102 ◽  
pp. 107-110 ◽  
Author(s):  
Vasilios A. Zerris ◽  
Georg C. Noren ◽  
William A. Shucart ◽  
Jeff Rogg ◽  
Gerhard M. Friehs
Keyword(s):  
Mr Imaging ◽  
Trigeminal Neuralgia ◽  
Gamma Knife ◽  
Trigeminal Nerve ◽  
Cranial Nerve ◽  
Fusion Imaging ◽  
Vascular Compression ◽  
Content Type ◽  
History Of ◽  
Fine Print

Object.The authors undertook a study to identify magnetic resonance (MR) imaging techniques that can be used reliably during gamma knife surgery (GKS) to identify the trigeminal nerve, surrounding vasculature, and areas of compression.Methods.Preoperative visualization of the trigeminal nerve and surrounding vasculature as well as targeting the area of vascular compression may increase the effectiveness of GKS for trigeminal neuralgia. During the past years our gamma knife centers have researched different MR imaging sequences with regard to their ability to visualize cranial nerves and vascular structures. Constructive interference in steady-state (CISS) fusion imaging with three-dimensional gradient echo sequences (3D-Flash) was found to be of greatest value in the authors' 25 most recent patients.In 24 (96%) out of the 25 patients, the fifth cranial nerve, surrounding vessels, and areas of compression could be reliably identified using CISS/3D-Flash. The MR images were acceptable despite patients' history of microvascular decompression, radiofrequency (RF) ablation, or concomitant disease. In one of 25 patients with a history of multiple RF lesions, the visualization was inadequate due to severe trigeminal nerve atrophy.Conclusions.The CISS/3D-Flash fusion imaging has become the preferred imaging method at the authors' institutions during GKS for trigeminal neuralgia. It affords the best visualization of the trigeminal nerve, surrounding vasculature, and the precise location of vascular compression.

Neurilemmoma of the fourth cranial nerve

1979 ◽  
Vol 50 (4) ◽  
pp. 519-521 ◽  
Author(s):  
James E. Boggan ◽  
Mark L. Rosenblum ◽  
Charles B. Wilson
Keyword(s):  
Cranial Nerve ◽  
Trochlear Nerve ◽  
Content Type ◽  
Nerve Sheath ◽  
Trigeminal Nerves ◽  
Fourth Cranial Nerve ◽  
Fine Print

✓ A tumor of the trochlear nerve sheath with an unusual but diagnostic presentation is described. The rarity of reported cases may reflect failure to differentiate tumors originating from the trochlear and trigeminal nerves.

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