1/9. Hyperactive rhizopathy of the vagus nerve and microvascular decompression. Case report.A 37-year-old woman underwent microvascular decompression of the superior vestibular nerve for disabling positional vertigo. Immediately following the operation, she noted severe and spontaneous gagging and dysphagia. Multiple magnetic resonance images were obtained but failed to demonstrate a brainstem lesion and attempts at medical management failed. Two years later she underwent exploration of the posterior fossa. At the second operation, the vertebral artery as well as the posterior inferior cerebellar artery were noted to be compressing the vagus nerve. The vessels were mobilized and held away from the nerve with Teflon felt. The patient's symptoms resolved immediately after the second operation and she has remained symptom free. The authors hypothesize that at least one artery was shifted at the time of her first operation, or immediately thereafter, which resulted in vascular compression of the vagus nerve. To the authors' knowledge, this is the first reported case of a hyperactive gagging response treated with microvascular decompression. The case also illustrates the occurrence of a possibly iatrogenic neurovascular compression syndrome.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
2/9. Familial multiple trichoepithelioma associated with subclavian-pulmonary collateral vessels and cerebral aneurysm--case report.A 63-year-old woman presented with cerebellar infarction caused by occlusion of the right posterior inferior cerebellar artery. She had papules on her face that were identified histologically as multiple trichoepithelioma. Angiography revealed right subclavian-pulmonary collateral vessels and a cerebral aneurysm arising from the bifurcation of the right middle cerebral artery. Her grandmother, mother, and uncle had had similar papules, and the deaths of her mother and uncle were due to subarachnoid hemorrhage.- - - - - - - - - - ranking = 5keywords = vessel (Clic here for more details about this article) |
3/9. Acute vertigo following cervical manipulation.OBJECTIVE/HYPOTHESIS: Either licensed American chiropractors or traditional Chinese herbalists may produce vertiginous attack in a patient after cervical manipulation. The purpose of the study was to present our experience in treating these patients to determine the risk of this procedure. STUDY DESIGN: A retrospective study from May 1999 to April 2002. methods: Nine patients (one man and eight women) with acute vertigo after cervical manipulation were admitted and underwent a battery of audiometric and vestibular tests, accompanied by magnetic resonance imaging and magnetic resonance angiography examination. RESULTS: The mean interval for the onset of acute vertigo after cervical manipulation was within 1 day (17 h). electronystagmography revealed multiple central signs. magnetic resonance angiography scan also disclosed abnormality in the vertebral artery such as occlusion, stenosis, or slow blood flow in three patients. After treatment with dextran, relief of vertigo without neurological deficits was experienced in all nine patients. CONCLUSIONS: When there are multiple central signs in electronystagmography results or slow blood flow of the vertebral artery is displayed in neck on Doppler sonography or magnetic resonance angiography scan, the therapeutic benefits of cervical manipulation cannot be expected to outweigh its potential risk for the morbidity of cervical vessels.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
4/9. vertigo secondary to isolated pica insufficiency: successful treatment with balloon angioplasty.BACKGROUND: The posterior inferior cerebellar arteries (pica) arise from the intracranial segments of the vertebral artery (VA). We report a case where a nondominant isolated vertebral artery, which terminated in pica, was stenotic. This resulted in brainstem-lower cerebellar ischemia, corrected with balloon angioplasty. CASE DESCRIPTION: A 62-year-old male presented primarily with transient vertigo, syncope, and dizziness and was diagnosed with transient ischemic attack. Angiography of the left vertebral artery (VA) demonstrated a small-caliber vessel terminating in pica with a 90% stenosis at the C6 level. angioplasty of the left VA was performed with excellent resolution of the stenosis. CONCLUSIONS: This case illustrates cerebellar insufficiency in a unique case where the pica was isolated, supplied by a small- caliber VA. Correction of the stenosis improved the patient's symptomatology and prevented an inferior brainstem-cerebellar infarction.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
5/9. Clinical diagnosis of vertebrobasilar insufficiency: resident's case problem.STUDY DESIGN: Resident's case problem. BACKGROUND: vertigo and visual disturbances are common symptoms associated with vertebrobasilar insufficiency (VBI), but the physical examination procedures to verify the existence of VBI have not been validated in the literature. The objective of this resident's case problem is to demonstrate how a patient's complaint of vertigo and visual disturbances, combined with positive clinical examination findings, can be a potential medical screening tool for VBI. diagnosis: The patient in this report was initially referred to physical therapy for neck pain. However, the patient's chief concerns identified during the history were (1) vertigo, (2) visual disturbances, (3) headache, and (4) right shoulder region pain. Clinical VBI tests were performed, whereby the patient's vertigo and visual disturbances were reproduced with cervical spine extension. The patient was sent back to the referring physician to be evaluated for possible VBI. diagnostic imaging tests were ordered. Carotid ultrasound revealed 80% to 90% stenosis in the proximal left internal carotid artery, and magnetic resonance angiography of the extracerebral vessels showed greater than 90% stenosis of the left internal carotid artery. DISCUSSION: VBI may be present in patients with subjective reports of vertigo and visual disturbances that are reproduced with VBI physical examination procedures.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
6/9. Macrovascular causes underlying otoneurological disturbances.In the diagnostic procedure for patients with symptoms and signs indicating VIIIth nerve or brain stem disturbances, the possible presence of tumors, infarcts, bleedings or microvascular loops are taken into account. Ten patients with vertigo, balance disorders, tinnitus or unilateral hearing loss proved to have a similar cause underlying the disturbances. They ranged in age from 51 to 80 years and had a duration of their symptoms of 1-10 years. In the test battery audiology, electronystagmography, broad-frequency rotatory testing and dynamic posturography were used. No uniform pattern was present. The results showed VIIIth nerve as well as CNS signs. trigeminal neuralgia and hemifacial spasm were observed. CT, NMR or angiography were performed. The common finding for these patients were ectatic vertebral and/or basilar arteries. The size and position of the vessels indicated that compression of the VIIIth nerve or brainstem was the cause underlying their disturbances. To exclude that macrovessels appear in patients without neurotological symptoms and signs 300 consecutive NMR investigations in patients referred for other than neurotogic indications were scrutinized. In these patients no macrovessels were found. The findings indicate that ectatic vessels may cause disturbances mimicking a pontine angle tumor, Meniere's disease and other peripheral or central conditions with inner ear symptoms, vertigo and balance disorders. Arterial loops in the pontine angle may give indications for microvascular surgery, but the big ectatic vertebral and basilar arteries may offer surgical decompression possibilities, though with large risks.- - - - - - - - - - ranking = 4keywords = vessel (Clic here for more details about this article) |
7/9. Inner ear involvement in mixed cryoglobulinaemia patients.In order to evaluate the nature and prevalence of audiovestibular disturbances in mixed cryoglobulinaemia (MC), 32 consecutive MC patients were studied by a wide audiological and vestibular examination. Pure tone audiometry, impedance audiometry, brainstem response audiometry and vestibular function were performed. patients with a previous history of ear damage due to other well-known agents were excluded from the study. In MC patients we found a rather frequent audiovestibular involvement (34.3%). Bilateral sensorineural hearing loss was found in seven MC patients (22%) and altered vestibular function test values in other seven subjects (22%). Moreover, anamnestic and clinical data revealed a high incidence of benign positional paroxysmal vertigo in our MC series. We can suppose that immune complex-mediated microvascular involvement of the labyrinthine vessels may be responsible for inner ear damage in MC. Thus, audiovestibular disturbances may be included among various organ involvement of the MC.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
8/9. Persistent trigeminal artery as a cause of dizziness.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.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |
9/9. Internal auditory artery infarction: clinicopathologic correlation.OBJECTIVE: To study the pathophysiology of labyrinthine infarction. BACKGROUND: The syndrome of sudden onset vertigo or hearing loss is commonly attributed to inner ear vascular disease, yet histologic studies of isolated labyrinthine infarction in humans have been rare and have not included a complete examination of the vertebrobasilar vascular system. methods: Temporal bones, brainstem, cerebellum, and the supplying blood vessels were subjected to gross and microscopic postmortem examinations in a 92-year-old woman who had a sudden onset of vertigo and hearing loss in the right ear 7 years before death. RESULTS: There were prominent atherosclerotic changes at the vertebrobasilar junction, but the internal auditory artery and its branches were patent on both sides. Histologic studies showed degenerative changes in the cochlea and vestibular labyrinth on the right. The posterior canal ampulla and saccular macule were relatively preserved showing partial areas of intact sensory epithelium with underlying nerve fibers. The right vestibulocochlear nerve showed a fibrotic scar and multiple patchy areas of degeneration. These findings are most consistent with a transient period of reduced perfusion of the internal auditory artery. CONCLUSION: The partial sparing of the inferior vestibular labyrinth may indicate a decreased vulnerability to ischemia because of its better collateral blood supply.- - - - - - - - - - ranking = 1keywords = vessel (Clic here for more details about this article) |