Adult aqueductal stenosis presenting with fluctuating hearing loss and vertigo

1983 ◽  
Vol 59 (4) ◽  
pp. 703-705 ◽  
Author(s):  
Orhan Barlas ◽  
Hüsameddin Gökay ◽  
M. İnan Turantan ◽  
Nermin Başerer
Keyword(s):  
Hearing Loss ◽  
Inner Ear ◽  
Positive Contrast ◽  
Aqueductal Stenosis ◽  
The Other ◽  
Content Type ◽  
Contrast Ventriculography ◽  
Inner Ear Dysfunction ◽  
Fluctuating Hearing Loss ◽  
Fine Print

✓ Two cases of aqueductal stenosis presenting with fluctuating hearing loss, tinnitus, and vertigo are presented. Audiovestibulometric assesment of both cases disclosed the characteristic pattern of disorder of the membranous inner ear. Non-tumoral aqueductal stenosis was demonstrated by computerized tomography in one case and by positive contrast ventriculography in the other. Shunting procedures of the cerebrospinal fluid resulted in resolution of inner ear dysfunction in both patients.

Posttraumatic vertigo

1979 ◽  
Vol 51 (6) ◽  
pp. 860-861 ◽  
Author(s):  
George B. Jacobs ◽  
Joel F. Lehrer ◽  
Robert C. Rubin ◽  
John H. Hubbard ◽  
Donald J. Nalebuff ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Surgical Repair ◽  
Surgical Intervention ◽  
Direct Result ◽  
Content Type ◽  
Course Of Illness ◽  
Sensory Neural ◽  
Fluctuating Hearing Loss ◽  
Sensory Neural Hearing Loss ◽  
Fine Print

✓ Posttraumatic vertigo may be an accompanying symptom associated with concussion and with the post-concussion state. It is possible, however, that these symptoms are related to perilymphatic fistulas and are not the direct result of cerebral concussion. Although many fistulae heal spontaneously, patients with persistent vertigo and fluctuating hearing loss following head trauma may have associated defects in the perilymphatic channels with fistulas in the region of the oval or round windows. This paper presents results of surgical repair in three patients with fistulas. Surgical intervention becomes much more urgent when sensory neural hearing loss has occurred acutely or has developed during the course of illness.

The significance for postoperative hearing of preserving the labyrinth in acoustic neurinoma surgery

1992 ◽  
Vol 77 (5) ◽  
pp. 677-684 ◽  
Author(s):  
Marcos Tatagiba ◽  
Madjid Samii ◽  
Cordula Matthies ◽  
Mowaffak El Azm ◽  
Robert Schonmayr
Keyword(s):  
Hearing Loss ◽  
Inner Ear ◽  
Semicircular Canal ◽  
Semicircular Canals ◽  
Cochlear Nerve ◽  
Acoustic Neurinoma ◽  
Content Type ◽  
Acoustic Neurinomas ◽  
A Prospective Study ◽  
Fine Print

✓ Among 186 patients with preoperative hearing, a total of 189 acoustic neurinomas were removed through a lateral suboccipital approach with anatomical preservation of the cochlear nerve. Functional hearing was preserved in 92 (49%) of these patients; despite anatomical preservation of the cochlear nerve, deafness was the result in 51 % of the series. Many factors have been considered to cause hearing loss in patients whose cochlear nerve was intact after surgery; these include nerve retraction, nerve or cochlear ischemia, overheating and vibration damage to the nerve, and opening of the labyrinth. To evaluate the significance of injury to the labyrinth in postoperative hearing loss, a prospective study was undertaken. High-resolution computerized tomography studies through the inner ear with bone algorithm were performed pre- and postoperatively. The postoperative status of the labyrinth was classified into three patterns: intact, fenestrated, and widely opened. Injury to the labyrinth occurred in 30% of the cases. The most frequently injured labyrinth structures were the crus commune of the posterior and superior semicircular canals (52%), the posterior semicircular canal (23%). the vestibule (21%), and the superior semicircular canal (4%). A statistically significant relationship was found between injury to the labyrinth and deafness, elevated thresholds, and lower discrimination values at pure-tone audiograms and speech audiometry (p < 0.0001). The degree of the injury (comparison between fenestration and wide opening of the labyrinth) was also significantly related to postoperative deafness (p < 0.0001). Disturbance of the inner-ear fluids was considered to be the cause of the hearing loss. In 12 patients labyrinth injury was not associated with deafness. This finding may support the existence of mechanisms of cochlear protection. The homeostatic function of the endolymphatic sac was considered to play an important role in recovery of damaged hearing in these 12 cases.

Double-contrast ventriculography with oxygen and water-soluble positive contrast medium, metrizamide (Amipaque)

1979 ◽  
Vol 51 (2) ◽  
pp. 211-218 ◽  
Author(s):  
Antti Servo ◽  
Viljo Halonen
Keyword(s):  
Contrast Medium ◽  
Computerized Tomography ◽  
Obstructive Hydrocephalus ◽  
Positive Contrast ◽  
Ct Scanning ◽  
Water Soluble ◽  
Double Contrast ◽  
Content Type ◽  
Contrast Ventriculography ◽  
Fine Print

✓ A technique for ventriculography using both gas and a positive contrast medium metrizamide (Amipaque) is presented. This ventriculographic method proved superior to computerized tomography (CT) scanning in revealing the cause of obstructive hydrocephalus. Small central tumors and intraventricular cysts, often missed with CT, were also well demonstrated. This technique has been used since 1975, and is simple an$ safe.

Endolymphatic sac tumors in von Hippel—Lindau disease

2004 ◽  
Vol 100 (3) ◽  
pp. 480-487 ◽  
Author(s):  
Daniel Choo ◽  
Lawrence Shotland ◽  
Maryann Mastroianni ◽  
Gladys Glenn ◽  
Carter van Waes ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Inner Ear ◽  
Family Members ◽  
Magnetic Resonance Images ◽  
Endolymphatic Sac ◽  
Specific Gene ◽  
Content Type ◽  
Von Hippel Lindau ◽  
Vhl Disease ◽  
Fine Print

Object. Von Hippel—Lindau (VHL) disease is a hereditary multiple-neoplasia syndrome mapping to chromosome 3p25–26. Endolymphatic sac (ELS) tumors have been identified as a neoplastic manifestation of VHL disease. The purpose of this study was to evaluate comprehensively the natural history of inner ear disease in a large population of patients with confirmed or suspected VHL disease and to correlate the clinical features with the VHL genotype. Methods. The authors collated and analyzed clinical and genotypic data obtained in patients enrolled in an Institutional Review Board—approved protocol in which families and individuals affected by VHL disease were studied. These data included results from multidisciplinary history workups and physical examinations, imaging studies, and a battery of audiological tests. One hundred seventy-five patients were enrolled in the study, 129 with confirmed VHL disease and 46 of their family members in whom test results for VHL disease were negative and who served as controls. Twenty-one patients had ELS tumors that were evident on magnetic resonance images; three of them had bilateral ELS lesions. Hearing loss, often sudden in onset and severe to profound in nature, vestibulopathy, aural fullness, and tinnitus represented the primary symptoms of ELS tumor. Distinct patterns of auditory and vestibular dysfunction occurred at different stages of the disease. Phenotypic data showed that 17 of 21 patients with ELS tumors did not have pheochromocytomas, whereas all had VHL disease affecting the kidney, all but two had VHL disease affecting the central nervous system, and all but one had disease affecting the pancreas. Genotyping revealed 10 rearrangements (partial deletions), eight single bp substitutions, and one 3-bp insertion. Although there was no difference in the incidence of hearing loss between populations, symptoms of imbalance and aural fullness were more common in patients with VHL disease but without imaging evidence of ELS tumor than they were in family members who did not have VHL disease (p < 0.01). Conclusions. Endolymphatic sac tumors are frequently associated with VHL disease. Symptoms of disequilibrium or aural fullness in patients with VHL disease may be an early indication of endolymphatic dysfunction. Patients with VHL disease provide a unique opportunity to examine the effects of specific gene mutations and a discrete neoplastic process on the human inner ear. The study of ELS tumors in this group also provides a pathological model of ELS function and supplies evidence for a role of the ELS in clinical Ménière-like disease(s).

Ventriculoatrial shunt blockage by previous positive contrast ventriculography

1973 ◽  
Vol 39 (3) ◽  
pp. 356-358 ◽  
Author(s):  
Jorge Mendez S.
Keyword(s):  
Intracranial Pressure ◽  
Contrast Medium ◽  
Positive Contrast ◽  
Ventriculoatrial Shunt ◽  
Increased Intracranial Pressure ◽  
Content Type ◽  
Contrast Ventriculography ◽  
Fine Print

✓ Obstruction of both Torkildsen and ventriculoatrial shunts by positive contrast medium injected at a previous ventriculography is reported. This complication was surgically confirmed and alleviated. Two similar cases with ventriculoatrial shunts obstructed by Pantopaque are briefly described. All cases presented symptoms of increased intracranial pressure until the contrast medium was eliminated. In cases requiring Pantopaque ventriculography, central ventriculography often permits removal of the opaque medium at the end of the examination, avoiding this complication if shunting is performed later.

Posterior approach for cervical intramedullary arteriovenous malformation with diffuse-type nidus

1999 ◽  
Vol 91 (1) ◽  
pp. 105-111 ◽  
Author(s):  
Kenji Ohata ◽  
Toshihiro Takami ◽  
Alaa El-Naggar ◽  
Michiharu Morino ◽  
Akimasa Nishio ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Poor Prognosis ◽  
Posterior Approach ◽  
The Other ◽  
Anterior Spinal Artery ◽  
Neural Element ◽  
Feeding Artery ◽  
Diffuse Type ◽  
Content Type ◽  
Fine Print

✓ The treatment of spinal intramedullary arteriovenous malformations (AVMs) with a diffuse-type nidus that contains a neural element poses different challenges compared with a glomus-type nidus. The surgical elimination of such lesions involves the risk of spinal cord ischemia that results from coagulation of the feeding artery that, at the same time, supplies cord parenchyma. However, based on evaluation of the risks involved in performing embolization, together with the frequent occurrence of reperfusion, which necessitates frequent reembolization, the authors consider surgery to be a one-stage solution to a disease that otherwise has a very poor prognosis. Magnetic resonance (MR) imaging revealed diffuse-type intramedullary AVMs in the cervical spinal cords of three patients who subsequently underwent surgery via the posterior approach. The AVM was supplied by the anterior spinal artery in one case and by both the anterior and posterior spinal arteries in the other two cases. In all three cases, a posterior median myelotomy was performed up to the vicinity of the anterior median fissure that divided the spinal cord together with the nidus, and the feeding artery was coagulated and severed at its origin from the anterior spinal artery. In the two cases in which the posterior spinal artery fed the AVM, the feeding artery was coagulated on the dorsal surface of the spinal cord. Neurological outcome improved in one patient and deteriorated slightly to mildly in the other two patients. Postoperative angiography demonstrated complete disappearance of the AVM in all cases. Because of the extremely poor prognosis of patients with spinal intramedullary AVMs, this surgical technique for the treatment of diffuse-type AVMs provides acceptable operative outcome. Surgical intervention should be considered when managing a patient with a diffuse-type intramedullary AVM in the cervical spinal cord.

Relief of facial pain after combined removal of precentral and postcentral cortex

1971 ◽  
Vol 34 (4) ◽  
pp. 537-543 ◽  
Author(s):  
Richard A. Lende ◽  
Wolff M. Kirsch ◽  
Ralph Druckman
Keyword(s):  
Facial Pain ◽  
The Other ◽  
Precentral Gyrus ◽  
Nerve Section ◽  
Content Type ◽  
Burning Pain ◽  
Cortical Localization ◽  
The Brain ◽  
Fine Print ◽  
Frontal Lobotomy

✓ Cortical removals which included precentral and postcentral facial representations resulted in relief of facial pain in two patients. Because of known failures following only postcentral (SmI) ablations, these operations were designed to eliminate also the cutaneous afferent projection to the precentral gyrus (MsI) and the second somatic sensory area (SmII). In one case burning pain developed after a stroke involving the brain stem and was not improved by total fifth nerve section; prompt relief followed corticectomy and lasted until death from heart disease 20 months later. In the other case persistent steady pain that developed after fifth rhizotomy for trigeminal neuralgia proved refractory to frontal lobotomy; relief after corticectomy was immediate and has lasted 14 months. Cortical localization was established by stimulation under local anesthesia. Each removal extended up to the border of the arm representation and down to the upper border of the insula. Such a resection necessarily included SmII, and in one case responses presumably from SmII were obtained before removal. The suggestions of Biemond (1956) and Poggio and Mountcastle (1960) that SmII might be concerned with pain sensibility may be pertinent in these cases.

Coagulopathy with the use of hetastarch in the treatment of vasospasm

1995 ◽  
Vol 82 (1) ◽  
pp. 44-47 ◽  
Author(s):  
Eric R. Trumble ◽  
J. Paul Muizelaar ◽  
John S. Myseros ◽  
Sung C. Choi ◽  
Brian B. Warren
Keyword(s):  
Volume Expansion ◽  
Clinical Symptoms ◽  
Standard Of Care ◽  
The Other ◽  
Appropriate Use ◽  
Content Type ◽  
Prevention And Treatment ◽  
Plasma Protein Fraction ◽  
Clinically Significant ◽  
Fine Print

✓ The use of colloid agents to achieve hypervolemia in the prevention and treatment of postsubarachnoid hemorrhage (post-SAH) vasospasm is included in the standard of care at many institutions. Risk profiles are necessary to ensure appropriate use of these agents. In a series of 85 patients with recent aneurysmal SAH, 26 developed clinical symptoms of vasospasm. Fourteen of the 26 were treated with hetastarch for volume expansion while the other 12 received plasma protein fraction (PPF). Clinically significant bleeding pathologies were noted in six patients who received hetastarch as a continuous intravenous infusion. Hetastarch increased partial thromboplastin time from a mean of 23.9 seconds to a mean of 33.1 seconds (p < 0.001) in all patients who received infusions of this agent, while no effect was noted in the 12 patients who received PPF infusions. No other coagulation parameters were altered. This study shows an increase in coagulopathy with the use of hetastarch as compared with the use of PPF for the treatment of postaneurysmal vasospasm.

Persistent high lactate level as a sensitive MR spectroscopy indicator of completed infarction

1990 ◽  
Vol 72 (5) ◽  
pp. 763-766 ◽  
Author(s):  
Kiyohiro Houkin ◽  
Ingrid L. Kwee ◽  
Tsutomu Nakada
Keyword(s):  
Magnetic Resonance ◽  
Cerebral Infarction ◽  
Mr Spectroscopy ◽  
The Other ◽  
Proton Spectroscopy ◽  
Normal Pattern ◽  
Content Type ◽  
Lactate Levels ◽  
High Lactate ◽  
Fine Print

✓ Serial proton (1H) and phosphorus-31 (31P) magnetic resonance (MR) spectroscopy of cerebral infarction was performed in rats to assess the sensitivity of these techniques for use in clinical cerebral infarction. In this experimental chronic infarction model, 31P spectroscopy tended to return to a “normal” pattern within 24 hours after induction of infarction in spite of pathologically proven completed infarction and, therefore, appeared not to be sensitive enough for clinical application. On the other hand, proton spectroscopy invariably showed persistent high lactate levels and was capable of distinguishing completed infarction from reperfused recovered brain. Persistent high lactate levels appear to be a good MR spectroscopic indicator of completed infarction.

Automobile accidents caused by unsuspected neurological disease

1973 ◽  
Vol 38 (5) ◽  
pp. 581-583 ◽  
Author(s):  
James R. Keane
Keyword(s):  
Neurological Disease ◽  
Neurological Diseases ◽  
Artery Aneurysm ◽  
The Other ◽  
Automobile Accidents ◽  
Content Type ◽  
Cerebral Trauma ◽  
Left Posterior ◽  
Posterior Communicating Artery Aneurysm ◽  
Fine Print

✓ Two patients admitted as cerebral trauma cases following single-car automobile accidents were found to have previously-unsuspected, surgically-treatable neurological diseases that undoubtedly caused the accidents. A left posterior communicating artery aneurysm was clipped in one patient and a right frontal lobe abscess aspirated in the other, with excellent results in both patients.

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