Abducence nerve

Headache in women in their late forties can be primary or secondary. We report a 48-year-old female with chronic slowly progressive left temporal headache for 1 year. She also had ipsilateral eye pain and facial numbness for 1 month, with restricted abduction in the left eye and diplopia. On neurological examination, she had isolated left abducent nerve palsy, with loss of corneal and conjunctival reflexes, localizing the pathology to the cavernous sinus or its adjacent structures. Anatomically, cranial nerves V and VI are in close proximity to each other in the region of Meckel's cave...

INTRODUCTION AND IMPORTANCE: Trapped fourth ventricle (TFV) also known as isolated fourth ventricle (IFV) is a rare clinico-radiologic entity with only a few cases reported in the literatures. The aim of this article is to present the first case of this condition in our center and highlight the challenges of arriving at clinical diagnosis and treatment in a resource limited setting. CASE PRESENTATION: An 18 months old girl who had ventriculoperitoneal shunt insertion for post meningitic hydrocephalus 4 months earlier presented with restlessness, ataxia, fever and inability to control her neck of one-week duration...

No abstract text is available yet for this article.

Miller Fisher syndrome (MFS) is a rare variant of Guillain-Barre syndrome (GBS) which usually presents with descending paralysis. Common symptoms are ophthalmoplegia, ataxia, and areflexia. Our case presented with an atypical presentation. A 52-year old lady presented to the neurology outpatient department with frequent falls, blurring and doubling of vision and difficulty swallowing. These symptoms followed mild non-bloody diarrhea for two weeks ago. She had bilateral ptosis, lateral gaze palsy in both eyes, absent gag and cough reflex; she was unable to walk in a straight line and had right-hand grip weakness...

BACKGROUND: Microvascular decompression (MVD) is a commonly performed procedure to treat trigeminal neuralgia and hemifacial spasm. Knowledge of the variable anatomy of the cerebellopontine angle is crucial to avoid injury to cranial nerves. CASE DESCRIPTION: A 76-year-old lady with right V1 (ophthalmic division of the trigeminal nerve) and V2 (maxillary division of the trigeminal nerve) trigeminal neuralgia, refractory to medical treatment, underwent elective MVD...

OBJECTIVES: Intracranial chordomas are thought to arise from remnants of the notochord and usually occur at the parasellar region. We present a case of a primary intrasellar chondroid chordoma in a patient who was initially diagnosed with a pituitary adenoma. CASE: A 77-year-old woman had a history of two surgeries for a tumor in the sella turcica(17 months after the 1^st surgery). On initial MRI, the intrasellar mass showed low signal intensity on T1WI, very high signal intensity on T2WI, and inhomogeneous enhancement...

BACKGROUND: Sixth-nerve palsy often develops as a result of trauma, neoplasm, or vascular disease affecting the pons. Less commonly, this palsy can be caused by pathology of the internal carotid artery in the cavernous sinus region. Here, we describe a rare case of spontaneous dissection of the internal carotid artery in the cavernous sinus accompanied by acute sixth nerve palsy that was successfully treated with surgery. CASE DESCRIPTION: An 18-year-old man presented suddenly and spontaneously with isolated abducent nerve palsy...

BACKGROUND: Immunoglobulin G4 (IgG4)-related disease is a more recently recognized syndrome. It is characterized by increasing IgG4-positive plasma cells and lymphocyte infiltration. Reports of intracranial pseudotumors associated with IgG4-related disease are very rare. We report a rare case of clivus pseudotumor associated with IgG4-related disease mimicking meningioma. CASE DESCRIPTION: A 50-year-old man presented with abducens paralysis of the right eye. Brain magnetic resonance imaging revealed a uniformly enhanced mass located in the right upper clivus area, and meningioma was highly suspected...

OBJECTIVE: Although ruptured vertebral artery dissecting aneurysms (VADAs) are often associated with ocular symptoms, such as abducent nerve palsy and Terson syndrome (TS), their frequency and risk factors in comparison with those associated with ruptured aneurysms in other locations have not been reported. METHODS: Three hundred forty-three patients with nontraumatic subarachnoid hemorrhage were treated in our hospital from April 2002 to May 2016, among which 35 (10...

OBJECTIVE: The clinical presentation of sphenoid sinusitis can be highly variable. Rarely, sphenoid sinusitis may present with cranial nerve complications due to the proximity of these structures to the sphenoid sinus. METHOD: A case series from Rabin Medical Center and all cases of cranial nerves palsies secondary to sphenoid sinusitis that have been reported in the literature were reviewed. RESULTS: Seventeen patients were identified. The abducent nerve was the most common cranial nerve affected (76%), followed by the oculomotor nerve (18%)...

PURPOSE: To investigate the effects of detachable balloons in embolizing traumatic carotid cavernous fistulas (TCCFs) and the risk factors for recurrence after balloon embolization. MATERIALS AND METHODS: 188 patients with TCCFs were enrolled, and clinical, treatment, and follow-up data were analyzed for possible risk factors for recurrence after embolization. RESULTS: Among 188 patients, 182 (96.8%) had successful balloon embolization; 6 patients failed...

BACKGROUND: Trigeminal neuralgia (TN) is the most common type of facial neuralgia with incidence of 26.8/100,000 person year. In general, this scenario is characterized by a lancinating, unilateral, paroxysmal pain in the area of the fifth cranial nerve. Several treatment methods, including the injection of ethyl alcohol or butyl alcohol into the ganglion, the glycerol injection into the trigeminal cistern, peripheral nerve divisions, the radiofrequency thermocoagulation of the preganglionic fibers, and radiosurgery has been used for TN...

Mobius syndrome is a rare congenital disorder with the preliminary diagnostic criteria of congenital facial and abducent nerve palsy. Involvement of other cranial nerves, too, is common. Prevalence rate of this syndrome is approximately 1 in 100,000 neonates. It is of unknown etiology with sporadic occurrence. However, data regarding the occurrence rate in India is limited. Features such as orofacial malformations, limb defects, and musculoskeletal, behavioral, and cognitive abnormalities might be associated...

Nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) enzymatic activity has been reported in few amphibian species. In this study, we report its unusual localization in the medulla oblongata, spinal cord, cranial nerves, spinal nerves, and ganglions of the frog, Microhyla ornata. In the rhombencephalon, at the level of facial and vagus nerves, the NADPH-d labeling was noted in the nucleus of the abducent and facial nerves, dorsal nucleus of the vestibulocochlear nerve, the nucleus of hypoglossus nerve, dorsal and lateral column nucleus, the nucleus of the solitary tract, the dorsal field of spinal grey, the lateral and medial motor fields of spinal grey and radix ventralis and dorsalis (2-10)...

If the origin of isolated abducent nerve palsy cannot be found on neuroradiological examinations, diabetes mellitus is known as a probable cause; however, some cases show no potential causes of isolated abducent nerve palsy. Here, we report a 74-year-old male who suffered from diplopia due to isolated left abducent nerve palsy. Magnetic resonance angiography and fast imaging employing steady-state acquisition imaging clearly showed a dolichoectasic vertebrobasilar artery compressing the left abducent nerve upward and outward...

No abstract text is available yet for this article.

Patients suffering from abducent nerve palsy are usually primary seen by a conservative medical Specialist. In most cases the ENT specialist is secondary involved for treatment. In the majority of cases abducent nerve palsy is a temporary symptom associated with neurologic or vascular diseases. Rarely inflammation, neoplasm or fracture of the skull base cause this symptom and lead to an intervention done by the ENT surgeon. This case series describes retrospectively the abducent palsy seen through the eyes of an ENT surgeon...

BACKGROUND AND AIMS: Intra-operative identification and preservation of extraocular motor nerves is one of the main goals of surgeries for skull base tumours and this is done by monitoring the extraocular movement (EOM). Intra-operative electromyographic monitoring has been reported, but it is a complex and skilful process. Electrooculography (EOG) is a simple and reliable technique for monitoring EOMs. We aimed to assess the utility of EOG monitoring in preventing extraocular motor nerve dysfunction during skull base surgeries...

OBJECTIVE: With the development of modern skull base minimally invasive technology mature and neural radio surgery techniques, it is necessary to re-examine the therapeutic strategy for the treatment of petroclival meningiomas. To sum up the operative experience and methods in microsurgical resection of petroclival meningiomas by the combining trans-subtemporal and suboccipital retrosigmoid keyhole approach. To explore the minimally invasive operation approach of petroclival meningiomas, to raise the removal degree and to improve the postoperative result using this approach...

INTRODUCTION: The abducent nucleus is located in the upper part of the rhomboid fossa beneath the fourth ventricle in the caudal portion of the pons. The abducent nerve courses from its nucleus, to innervate the lateral rectus muscle. This nerve has the longest subarachnoid course of all the cranial nerves, it is the cranial nerve most vulnerable to trauma. It has been reported that 1% to 2.7% of all head injuries are followed by unilateral abducent palsy, but bilateral abducent nerve palsy is extremely rare...