1/12. Resolution of MRI abnormalities of the oculomotor nerve in childhood ophthalmoplegic migraine.ophthalmoplegic migraine is an uncommon disorder, usually starting in older childhood. Its physiopathology remains obscure and diagnosis is reliant on clinical grounds and exclusion of other disorders. We report four cases of childhood ophthalmoplegic migraine, one of them starting in infancy. association with other types of migraine is common. Two of the three patients studied by magnetic resonance imaging (MRI) showed enhancement and enlargement of the cisternal portion of the oculomotor nerve, which spontaneously resolved after 2 and 4 years, respectively. Persistence of clinical recurrences was associated with long-lasting presence of the MRI finding, and possibly with mild sequelae. These radiological abnormalities suggest a common physiopathological mechanism with other inflammatory diseases, except for a benign evolution which, added to its specific anatomic site, seems to be the only neuroradiological marker, besides normality, in ophthalmoplegic migraine. The very long potential duration of MRI changes and the scarcity of clinical episodes make feasible its incident discovery once the migraine attack has become a remote memory.- - - - - - - - - - ranking = 1keywords = oculomotor nerve, nerve (Clic here for more details about this article) |
2/12. Acute onset of a bilateral areflexical mydriasis in Miller-Fisher syndrome: a rare neuro-ophthalmologic disease.Miller-Fisher syndrome (MFS) is characterized by variable ophthalmoplegia, ataxia, and tendon areflexia. It seems to be a variant of guillain-barre syndrome (GBS), but unlike in GBS, there is a primitive involvement of the ocular motor nerves, and in some cases there is brainstem or cerebellum direct damage. The unusual case of MFS in the current study started with a bilateral areflexical mydriasis and a slight failure of accommodative-convergence. Ocular-movement abnormalities developed progressively with a palsy of the upward gaze and a bilateral internuclear ophthalmoplegia to a complete ophthalmoplegia. In the serum of this patient, high titers of an IgG anti-GQ1b ganglioside and IgG anti-cerebellum. anti-purkinje cells in particular, were found. The former autoantibody has been connected to cases of MFS, of GBS with associated ophthalmoplegia, and with other acute ocular nerve palsies. The anti-cerebellum autoantibody could explain central nervous system involvement in MFS. The role of these findings and clinical implications in MFS and in other neuro-ophthalmologic diseases are discussed.- - - - - - - - - - ranking = 0.0016758012539995keywords = nerve, palsy (Clic here for more details about this article) |
3/12. Dilated pupil during endoscopic sinus surgery: what does it mean?Endoscopic sinus surgery has become the standard of care for the surgical management of chronic sinus disease. Sinus disease and its surgical treatment carry the risk of orbital complications, irrespective of the approach. Orbital complications associated with sinus surgery include nasolacrimal duct damage, extraocular muscle injury, intraorbital hemorrhage/emphysema, and direct optic nerve damage, resulting in blindness. The finding of an unequal pupil at the end of a procedure would be a cause of considerable concern, but it is most likely due to the topical contamination of the eye with a mydriatic pharmacological agent commonly used in endoscopic sinus surgery.- - - - - - - - - - ranking = 0.0007292870826861keywords = nerve (Clic here for more details about this article) |
4/12. Dorsal midbrain syndrome secondary to a pineocytoma.BACKGROUND: Dorsal midbrain syndrome is a triad of signs consisting of vertical gaze palsy, light-near dissociation of the pupils, and convergence retraction nystagmus. Associated findings may also be present. The most-common etiologies are pineal gland tumors and midbrain infarction. pineal gland tumors are rare tumors that show a predilection for males. The specific tumor reported herein, a pineocytoma, shows no gender predilection and is most common in mid- to late adulthood. CASE REPORT: A 38-year-old Native American man came to us with signs and symptoms consistent with dorsal midbrain syndrome. A neurological evaluation revealed the presence of a pineocytoma, which was later excised unsuccessfully. An explanation of the findings associated with dorsal midbrain syndrome is provided. CONCLUSION: patients who demonstrate signs consistent with dorsal midbrain syndrome should be referred for a neurological evaluation--including an MRI--to rule out any midbrain lesion.- - - - - - - - - - ranking = 0.00021722708862731keywords = palsy (Clic here for more details about this article) |
5/12. adult-onset acquired oculomotor nerve paresis with cyclic spasms: relationship to ocular neuromyotonia.PURPOSE: To describe the characteristics and significance of acquired oculomotor nerve paresis with cyclic spasm. METHOD: Retrospective case series of two patients with a history of previous skull base irradiation for intracranial tumor who developed double vision and were found to have oculomotor nerve paresis with cyclic spasm. Both patients underwent a complete neuroophthalmologic assessment, including testing of eyelid position, pupillary size and reactivity, and ocular motility and alignment during both the paretic and spastic phases of the condition. RESULTS: Both patients developed unilateral lid retraction and ipsilateral esotropia with limitation of abduction during the spastic phase of the cycle, with ipsilateral ptosis, exotropia, and variable limitation of adduction during the paretic phase. The cycles were continuous and were not induced or altered by eccentric gaze. CONCLUSIONS: Cyclic oculomotor nerve paresis with spasms may occur years after irradiation of the skull base. This condition is different from the more common ocular motor disturbance that occurs in this setting-ocular neuromyotonia. However, in view of the similarity between these two disorders, it seems likely that they are caused by a similar peripheral mechanism.- - - - - - - - - - ranking = 1.2007292870827keywords = oculomotor nerve, nerve (Clic here for more details about this article) |
6/12. Inferior oblique paresis, mydriasis, and accommodative palsy as temporary complications of sinus surgery.A 15-year-old boy had temporary hypertropia, supraduction deficit, ipsilateral mydriasis, and accommodative paresis after bilateral endoscopic ethmoidectomy, bilateral partial inferior turbinectomy, septoplasty, and Caldwell-Luc procedures for chronic sinusitis. Postoperative imaging did not disclose any intra-orbital abnormalities. The patient was treated with oral prednisolone 70 mg/day on a tapering schedule. Within two months, the ophthalmic abnormalities had resolved. This is the second report to describe such findings, which are attributed to damage of the inferior division of the third cranial nerve secondary to manipulation of adjacent ethmoid tissues.- - - - - - - - - - ranking = 0.0024282597209283keywords = cranial nerve, nerve, palsy (Clic here for more details about this article) |
7/12. Unilateral mydriasis without ophthalmoplegia--a sign of neurovascular compression? Case report.OBJECTIVE: We aimed to demonstrate the use of neuroimaging studies in vascular compression of the oculomotor nerve. CLINICAL PRESENTATION: A 24-year-old woman was noted by her dentist to have anisocoria, with the left pupil being larger than the right. After detailed ophthalmologic and neurological examination, we proceeded to perform neuroimaging. T2-weighted images (2 mm) and constructive interference in steady-state (0.3 mm) images were utilized. INTERVENTION: magnetic resonance imaging showed that duplicated left superior cerebellar artery, a prominent posterior communicating artery, and a posterior cerebral artery combined to compress the superomedial portion of the left oculomotor nerve. CONCLUSION: With continued improvements in neuroimaging, we think that more cases of isolated cranial neuropathies previously labeled as "idiopathic" will be shown to result from vascular compression.- - - - - - - - - - ranking = 0.4keywords = oculomotor nerve, nerve (Clic here for more details about this article) |
8/12. Transient internal ophthalmoplegia during blepharoplasty. A report of three cases.The present paper presents three cases of transient internal ophthalmoplegia during blepharoplasty. All cases were characterized by a dilated pupil that was unreactive to light or an accommodative stimulus. There were no cases of visual loss or permanent pupillary abnormalities. We attribute the temporary pupillary mydriasis and accommodative insufficiency to anesthesia of the short ciliary nerves or ciliary ganglion from local anesthetic diffusing into the orbit at the time of injection. To the best of our knowledge this is a complication of eyelid surgery that has not been previously described.- - - - - - - - - - ranking = 0.0007292870826861keywords = nerve (Clic here for more details about this article) |
9/12. Unilateral mydriasis after induction of anaesthesia.Unilateral mydriasis is a disturbing finding during anaesthesia and may indicate serious neurological injury. In addition, the assessment of abnormal neurological findings is limited during general anaesthesia, and therefore requires special consideration. I report finding a dilated right pupil (7 mm, nonreactive to light) after bronchoscopic tracheal intubation and induction of general anaesthesia in a frail, 74-yr-old woman with cervical subluxations and spinal cord impingement. The possible aetiology of the unilateral mydriasis includes the effects of anaesthetic agents, stellate ganglion block, impaired venous return from the head and neck, acute intracranial mass lesion or an haemorrhagic event, direct eye trauma, pre-existing medical or surgical conditions, and inadvertent direct deposition of alpha-adrenergic or anticholinergic agents in the eye. Consideration of these factors, the autonomic innervation of the eye, and an intraoperative "wake-up" test allowed satisfactory neurological assessment in this patient and surgery to proceed. Unilateral mydriasis, while unusual, may be seen during general anaesthesia and requires thorough knowledge of autonomic nerve pathways and pharmacology of the eye for correct diagnosis. In this case, mydriasis was considered to result from phenylephrine/lidocaine spray which was used to provide topical anaesthesia to the airway.- - - - - - - - - - ranking = 0.0007292870826861keywords = nerve (Clic here for more details about this article) |
10/12. giant cell arteritis presenting as oculomotor nerve palsy with pupillary dilatation.Acute complete oculomotor palsy with headache is a classical presentation of an extrinsic compression most commonly due to a posterior communicating artery aneurysm. We present a patient with such a presentation but with histologically proven giant cell arteritis. This possibility should be considered especially in the elderly to avoid complications and the need for angiography.- - - - - - - - - - ranking = 0.80108613544314keywords = oculomotor nerve, nerve, palsy (Clic here for more details about this article) |
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