A case of unilateral posterior ischemic optic neuropathy after radical neck dissection.
We present a case of unilateral posterior ischemic optic neuropathy after bilateral radical neck dissection. Etiologic factors are discussed.
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We present a case of unilateral posterior ischemic optic neuropathy after bilateral radical neck dissection. Etiologic factors are discussed.
We report an unusual case of bilateral internuclear ophthalmoplegia occurring in association with fourth ventricular dermoid tumor and we review the current literature.
Optic neuropathy in Behçet's disease is rare, despite wide ocular and neurological involvement. Progressive atrophy of the optic disc and severe visual loss is not uncommon in Behçet's disease; however, visual loss due to acute optic neuropathy is less well known. We report three cases of optic neuropathy in Behçet's disease. The clinical picture was variable in our patients, presenting either as acute retrobulbar optic neuritis or anterior optic neuropathy. It is interesting to note that although the neurological picture resembles multiple sclerosis, there seems to be less predilection to optic nerve involvement in Behçet's disease.
Four of 150 patients with myasthenia gravis had upper lid retraction. Only two had apparent ptosis in the contralateral eye. Three patients developed this paradoxical sign during medical treatment and after thymectomy. Hering's law of equal innervation does not adequately explain this phenomenon, and the possibility of cholinergic overstimulation in neuromuscular transmission is raised.
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Paroxysmal localized hyperhidrosis is a rare sign of a disorder of the autonomic nervous system. It has been reported in association with peripheral nerve, spinal cord and hypothalamic lesions and in some cases the etiology is unidentified. We present 12 cases of idiopathic paroxysmal localized hyperhidrosis and discuss the therapeutic effect and possible mechanism of clonidine which is a specific central nervous system alpha 2--adrenergic receptor agonist.
A method is reported for the identification of cytoplasmic antibodies in patients with Behcet's disease and uveitis. The assay appears positive in at least 80% of patients in an American population with definite or probable Behcet's disease and 60% of patients from a Turkish population with definite Behcet's disease, with a false-positive rate of 6.5% among non-Behcet's ocular inflammatory disorders with vasculitis. When refined, this test may prove useful to the ophthalmologist in selecting out those patients with Behcet's disease from the larger group of patients with uveitis for whom no systemic etiology is identified.
A 26-year-old man with the diagnosis of paroxysmal nocturnal hemoglobinuria presented with papilledema due to increased intracranial pressure without localizing neurological signs. It is concluded that papilledema and benign intracranial hypertension could result from a cerebral vein thrombosis which can complicate the course of paroxysmal nocturnal hemoglobinuria. This has not been a well-recognized feature of the disease.
The authors report a case of hypopituitarism due to a cystic lesion in the sella turcica which was revealed by neuroradiological investigations. A hydatid cyst was found and removed by the transsphenoidal route. The transsphenoidal approach avoided intracranial spillage of fertile daughter cyst and scolices.
Twelve patients with recurrent cranial nerve palsies in whom no focal cause was found were seen during a period of 4 years. The literature is reviewed, and the relationship and similarity to Tolosa-Hunt syndrome is discussed. Early recognition is important since the response to steroids, although not specific, is rapid in most patients, and the prognosis for complete recovery is relatively good.
The prognosis for vision in most patients with pseudotumor cerebri is excellent; however, visual loss, which is the only serious complication, may occur either early or late in the course of the disease. A group of 57 patients was followed up five to 41 years with visual fields, visual acuity, and fundus photographs. Blinding visual loss or severe visual impairment in one or both eyes occurred in 14 patients, and in seven patients, this occurred months to years after the initial symptoms. Systemic hypertension was a significant risk factor for visual loss in patients with pseudotumor cerebri, and blindness occurred in eight of 13 patients who were hypertensive. Despite suggestions that blind spot measurement is useful for following up patients with this condition, we believe that sequential quantitative perimetry gives more complete information and is essential to rational decision making in the treatment of pseudotumor cerebri.
Two cases of orbital echinococcus cysts studied by computed tomography are presented. Incidence of orbital hydatidosis in Turkey is reported. Computed tomographic findings of orbital hydatid cysts are reviewed and summarized. Medial displacement of the orbital plate of the ethmoid bone is emphasized as a frequent finding in the reported cases.
A 15-year-old boy with a recurrent third nerve palsy who was found to have a neurinoma of the third nerve is described. Unusual features of his presentation and review of the literature relative to this rare tumor are discussed. Tumors derived from Schwann cells, which wrap around the axons of peripheral nerves, are called neurinomas, neurofibromas, plexiform neurofibromas, neurilemomas, and schwannomas. Neurinomas are usually localized in the peripheral nerves. The most frequent site of occurrence of an intracranial schwannoma is the acoustic nerve; however, the tumor may occur along the second, fifth, seventh, 11th, and 12th cranial nerves. Neurinomas of the oculomotor nerves are extremely rare. In the literature, there are only four reported cases clinically manifested and pathologically verified as neurinomas of the third nerve.
Six patients with Behçet's syndrome (five male, one female) had intracranial hypertension diagnosed by elevated CSF pressure in the presence of normal or small ventricles. All six patients had headaches and papilledema. Histories included oral ulcers in 5 patients, genital ulcers in 3, uveitis in 1, arthralgia in 4, and thrombophlebitis in 3. One patient had obstruction of the superior vena cava. A filling defect in the superior sagittal sinus was shown in two patients by carotid angiography, and cerebral circulation time was prolonged in one patient. Papilledema and intracranial hypertension as a result of cerebral vein thrombosis can be initial manifestations of Behçet's syndrome. This has not been a well-recognized feature of the syndrome.
In a case of Wilson's disease with flapping tremor, computed tomography demonstrated bilateral low-density areas in the thalamocapsular regions. Computed tomographic findings in Wilson's disease are discussed.
Symptomatic cysts of the septum pellucidum (fifth ventricle) are rare, and they are not usually considered among the causes of chiasmal compression. This report describes a case with a noncommunicating cyst of the septum pellucidum that presented with signs of chiasmal compression.
The temporal lobe agenesis syndrome is a rare congenital abnormality. In previous case reports, this syndrome has been described in association with arachnoid cysts or abnormal collections of CSF. An autopsy performed in the case of our 25-year-old patient revealed agenesis of frontal and temporal lobes without an anatomic cyst. During life the patient had no neurologic abnormalities that could be related to the lesion.
We report two elderly patients with normal erythrocyte sedimentation rate (ESR) and biopsy-confirmed giant cell arteritis. Because of the potentially disastrous consequences of undiagnosed giant cell arteritis, early treatment based on clinical diagnostic criteria is urged despite a normal ESR.