Traumatic oculomotor nerve palsy.

Traumatic isolated oculomotor nerve palsy is not common. Oculomotor nerve palsy without internal ophthalmoplegia (pupil sparing) is extremely rare. We report a case of this condition in a child. An 11-year-old boy was transferred to our hospital after a head injury in a traffic accident. Neuro-ophthalmic examination showed that the left eye had limited adduction, supraduction, and infraduction, incomplete convergence and left ptosis, but no internal ophthalmoplegia. Magnetic resonance imaging indicated mild bending of the ipsilateral oculomotor nerve at the posterior petroclinoid ligament. One month after injury, movement of the patient's eyes was normal on examination, but there was mild diplopia. The suggested mechanism of the oculomotor nerve palsy with pupil sparing in this case is stretching of the oculomotor nerve at the posterior petroclinoid ligament, maintaining an intact pupillomotor nerve.     

Isolated oculomotor nerve palsy in lymphoma

We report a patient with non-Hodgkin's lymphoma who developed a unilateral left oculomotor nerve palsy. Only eyelid lifting and vertical gaze were involved. Lateral gaze or sizes and light reactions of pupils were not involved. Magnetic resonance imaging revealed an enhancement of an upper part of left cavernous sinus and the posterior clinoid process. It was conceivable that lymphoma invaded the upper branch of oculomotor nerve. Such neurological symptoms in cases of oculomotor nerve palsy by lymphoma have not been reported previously. Because cranial neuropathy could occur as the first sign of lymphoma, lymphoma is an important differential diagnosis for the partial oculomotor palsy such as our present case.     

Acute lymphoblastic leukemia presenting with oculomotor nerve palsy

A 48-year-old man presented with left ptosis and double vision. Laboratory test findings indicated acute lymphoblastic leukemia (ALL). Lymphoblastic infiltration of both cavernous sinuses was observed on pituitary gland magnetic resonance imaging. Leukemias may present by many clinical conditions, but isolated cranial nerve palsy is very rare. To our knowledge, this is the first case of ALL presenting with oculomotor nerve palsy. Clinicians should consider oculomotor nerve palsy as the first ALL indication.     

A neuro-Behcet's lesion in oculomotor nerve nucleus

OBJECTIVE: Fascicular oculomotor nerve involvement is occasionally seen in Behcet's disease, but nuclear involvement is very rare. CASE PRESENTATION: A 25-year-old woman presented with the Behcet's symptoms and the left eye problems. Physical examination revealed muco-cutaneous lesions, eyelid ptosis, mydriasis, upward and medial gaze palsy and lateral deviation on the left eye. Serologic tests were positive. An inflammatory lesion was detected in the left oculomotor nerve nucleus on magnetic resonance imaging. Neuro-Behcet's disease was considered the most likely diagnosis. RESULT: Dexamethasone treatment was ordered. Muco-cutaneal lesions, laboratory abnormalities were normalized after 1 year; but oculomotor nerve palsy persisted in spite of improvement in radiological findings. CONCLUSION: Clinical signs of oculomotor nerve palsy may persist despite the radiological improvement.     

Isolated oculomotor nerve palsy in lymphoma

Abstract

We report a patient with non-Hodgkin’s lymphoma who developed a unilateral left oculomotor nerve palsy. Only eyelid lifting and vertical gaze were involved. Lateral gaze or sizes and light reactions of pupils were not involved. Magnetic resonance imaging revealed an enhancement of an upper part of left cavernous sinus and the posterior clinoid process. It was conceivable that lymphoma invaded the upper branch of oculomotor nerve. Such neurological symptoms in cases of oculomotor nerve palsy by lymphoma have not been reported previously. Because cranial neuropathy could occur as the first sign of lymphoma, lymphoma is an important differential diagnosis for the partial oculomotor palsy such as our present case. [Neurol Res 2000; 22: 347-348]     

Successful steroid pulse therapy for acute unilateral oculomotor nerve palsy associated with norovirus infection

We report a 4-year-old boy who developed acute unilateral oculomotor nerve palsy following Norovirus infection. He visited our hospital because of diplopia three weeks after Norovirus gastroenteritis. Physical examination showed only the left oculomotor nerve palsy. Enhanced MRI of the brain and cerebrospinal fluid examination revealed no abnormality. Anti GQlb antibody was negative. Because blepharoptosis and ophthalmoplegia progressed rapidly, we performed three courses of steroid pulse therapy (methylpredonisolone 30 mg/kg x 3 day/course) combined with vitamin B6. Autonomic dysfunction (isocorea, light reflex) began to improve in several days and subsequently extraocular movements (blepharoptosis, infraduction supraduction, adducent in order) resolved completely in one month. Idiopathic oculomotor paralysis is usually believed to be selflimited, but steroid pulse therapy should to be considered in cases ocular paralysis is so severe or progressive that immune-mediated mechanism was presumed.     

Internal Carotid Artery Occlusion Causing Acute Cranial Neuropathies

A 54-year-old male with a history of left posterior parietal ischemic stroke, epilepsy, tobacco and marijuana smoking, and alcohol abuse, presented with acute left visual loss and diplopia. On examination, he had reduced left visual acuity and a left oculomotor nerve palsy. CT angiogram from aortic arch to circle of Willis identified extensive thrombus occluding the left common and internal carotid arteries, extending to the left ophthalmic artery. This case demonstrates acute visual loss from ophthalmic artery occlusion, and left oculomotor nerve palsy from occlusion of the inferolateral trunk of the internal carotid artery (cavernous sinus portion).     

Transient third nerve palsy after electrometallicthrombosis of carotid cavernous fistulae.

Three patients had oculomotor nerve palsy as a complication of the treatment of carotid cavernous fistulae by electrometallicthrombosis of the cavernous sinus. In two, third nerve function returned without misdirection in two months or less. One was left with a partial third nerve palsy, also without misdirection.     

Incomplete oculomotor nerve palsy in the subarachnoid space caused by traumatic brain injury

A patient with traumatic brain injury showed incomplete oculomotor nerve palsy in the subarachnoid space. A 12-year-old girl was hospitalized after a head injury. Neuro-ophthalmic examination showed that the left eye had a ptosis and pupillary involvement. An MRI indicated an intracranial hematoma at the basilar portion of the left temple. The ptosis and pupillary involvement improved after elimination of the hematoma. The presentation patterns are best explained by topographic organization of the third nerve fiber within the subarachnoid space. This case suggests that the topographic organization of the third nerve should be considered in diagnosis of oculomotor nerve palsy.     

A patient with reversible pupil-sparing Weber's syndrome

This is a case report of a lady who presented with pupil-sparing Weber's syndrome. She had left oculomotor nerve palsy with normal pupil and right hemiparesis. The patient subsequently made a good recovery. An ischemic lesion of the lower mid-brain was demonstrated on the MRI scan of the brain, which corresponds to the motor nucleus of the oculomotor nerve. The article also describes the neuroanatomy of the oculomotor nerve and how its partial lesions lead to sparing of the pupil. In addition, this case report documents that a pupil-sparing Weber's syndrome could be reversible.     

Isolated nuclear oculomotor nerve palsy due to mesencephalic infarction

A patient with unilateral nuclear oculomotor palsy due to midbrain infarction is described. A 46-year-old man was admitted because of difficulty in opening right eye and double vision noticed when he awoke in that morning. On admission, neurological examination revealed total right oculomotor palsy with slight impairment of left upward gaze. There were no other neurologic abnormalities at all. Brain CT and cerebral angiograms were also normal. Magnetic resonance imaging (MRI) performed on the ninth day, however, demonstrated high signal intensity in the right tegmentum of the mesencephalon on T2-weighted images, which was shown more clearly after the administration of Gadolinium-DPTA. He was diagnosed as nuclear third nerve palsy caused by midbrain infarction. The majority of isolated oculomotor nerve palsy has been reported to be caused by extraaxial lesion. When the oculomotor palsy is caused by intraaxial ischemic lesion, it is usually accompanied by other brain stem signs, because abundant nuclei and fibers are present adjacent to the oculomotor nucleus and nerve in the mesencephalon. The present case clarified that such a small infarct disclosed only by MRI can cause isolated oculomotor nerve palsy. It is emphasized that the intraaxial ischemic lesion should be ruled out by using the sophisticated diagnostic aid before making diagnosis of peripheral lesion. This is the first report of the isolated third nerve palsy resulting from mesencephalic ischemic lesion in the Japanese.     

A case of late onset group B streptococcus meningitis with transient oculomotor nerve palsy

I report here a case of late onset Group B Streptococcus (GBS) meningitis with transient oculomotor nerve palsy. The boy was admitted to our hospital at 25 days of age. On the 5th hospital day, he was found to be unable to open the left eye. Although light reflex of both the eyes was intact, the left eye was deviated to the left lateral side. We administered intravenously steroid hormone and antibiotics. His eye movements were normalized on the 30th hospital day. Oculomotor nerve palsy in this case may have been caused by vasculitis of the middle cerebral artery. This case shows that steroid hormone is effective for vascular edema complicating neonatal meningitis.     

眶内电针治疗颅脑外伤后动眼神经麻痹的疗效及相关因素分析

目的 回顾眶内电针治疗颅脑外伤后动眼神经麻痹的病案,分析影响疗效的相关因素。方法 回顾性分析于我院接受眶内电针治疗的头外伤后动眼神经麻痹患者临床资料,使用多因素分析等方法对性别、年龄、颅脑损伤程度、动眼神经麻痹程度、眼运动神经麻痹评分、病程、治疗次数等可能影响疗效的因素进行分析。结果 90例患者中痊愈24例,显效及有效共46例,无效20例,总有效率77.8%。患者眼运动神经麻痹各项评分均明显减小,差异有统计学意义（P均<0.001）;其中眼睑运动和水平内收较下视运动、瞳孔散大及光反射改善明显。回归分析：GCS严重程度、病程为针灸有效的危险因素,（β=-3.835,P=0.016;β=-4.618,P=0.049）治疗次数为保护因素（β=0.406,P=0.006）;病程>90天的患者疗效差,针灸有效的可能性低,为≤ 90天的1/100（P<0.05）。结论 眶内电针可有效治疗头外伤后动眼神经麻痹,其中眼外肌较眼内肌恢复更好。其有效性受颅脑损伤程度,病程和治疗次数影响,GCS评分重,病程长、治疗次数少者针灸有效的可能性低。     

Isolated superior division oculomotor palsy in a child with spontaneous recovery.

A 10 year old boy with a superior division palsy of the left oculomotor nerve is reported. He had a flu-like illness 1 week before the onset. The computed tomography and magnetic resonance imaging scans were normal. Laboratory data for evaluation of infection, diabetes mellitus and myasthenia gravis were normal. The symptoms spontaneously disappeared after 2 months. The course of the illness in conjunction with the negative laboratory findings made this case an example of partial paralysis of the third nerve related to viral infection. In the literature, only several cases with isolated divisional palsy of the oculomotor nerve were found after a viral infection. Inferior division palsy has been reported in five children. Superior division palsy has been published in only two cases. Divisional palsy is more common among children and resolves spontaneously. This rare but important clinical entity is one of the differential diagnoses in oculomotor nerve palsies, particularly in children, which are neuroradiologically undiagnosed. It occurs after a viral infection and may affect a superior or inferior division alone.     

A case of left third nerve palsy and contralateral vertical gaze palsy with medial midbrain infarction]

An 81-year-old man developed oculomotor nerve palsy of the left eye and vertical gaze palsy of the right eye due to left medial midbrain infarction. His left eyelid was ptotic and the pupil was dilated. His right eye showed normal horizontal movement and Bell's phenomenon was preserved although the oculocephalic reflex was incomplete. There were no other abnormal neurological findings. The brain MRI revealed a high-intensity lesion in left medial midbrain on T2 weighted image. This lesion involved the oculomotor nerve nucleus, the interstitial nucleus of Cajal, and the rostral intersititial nucleus of the medial longitudinal fasciculus (riMLF). We thought that upward gaze palsy of the right eye was resulted from the infarction of the left riMLF or disruption of the axonal collateral of upward gaze fibers in the left oculomotor nucleus. Downward gaze palsy was resulted from the damage of the downward gaze fibers before their decussation, or the damage of the left interstitial nucleus of Cajal. This case provides evidence that unilateral lesion of the midbrain could cause contralateral vertical gaze palsy.     

MRI abnormalities of the oculomotor nerve in a case of ophthalmoplegic migraine]

A 15-year-old girl presented with headache in the left retro-orbital area associated with double vision. She had a history of migraine headaches since the age of 9, and her mother also had suffered from migraine. The patient had experienced a similar episode at the age of 13, which resolved without any treatment in a day. On examination, two days after the onset of diplopia the patient had left ptosis and paresis of inwards and downwards in the left eye. Her pupils were isocoric, and the light reflex was prompt. MRI of the brain showed thickening and enhancement of the left third nerve through the cistern portion, especially at the oculomotor midbrain exit. No cavernous sinus involvement was noted. Results of the hemogram, ESR, and CSF were normal. The oculomotor palsy resolved spontaneously within six days. A follow-up MRI two months later demonstrated a marked lessening of enhancement at the oculomotor nerve but did not completely disappeared. These serial MRI abnormalities are thought to be important and typical findings seen in the patients of ophthalmoplegic migraine.     

Nuclear oculomotor nerve syndrome and ocular tilt reaction caused by mesencephalic hematoma]

A 78-year-old man had a midbrain hemorrhage, documented by CT scan and MRI, resulting in a mild cerebellar syndrome predominant on the left upper limb, lateropulsion, and a complex ocular motor syndrome. The latter was associated with right nuclear oculomotor nerve palsy, gaze paresis to the left for voluntary saccades, and a tonic ocular tilt reaction. Pathophysiological mechanisms are discussed.     

不同治疗方法对后交通动脉瘤预后的影响

目的探讨手术治疗和栓塞这两种不同治疗方法对后交通动脉瘤的动眼神经麻痹症状的改善。方法对8年来的102例完全动眼神经麻痹的后交通动脉瘤患者回顾性分析，研究治疗方法与动眼神经功能恢复的程度的关系。结果手术组58例治疗后，动眼神经功能完全恢复19例，部分恢复29例。无恢复10例。栓塞组44例治疗后有6例完全恢复，部分恢复20例，无恢复18例。结论手术治疗后交通动脉瘤后的动眼神经功能的恢复率和部分恢复率都明显高于栓塞治疗。     

Meningioma in the interpeduncular cistern in a child

The authors describe an 8-year-old boy who presented with progressive oculomotor palsy on the left side. The diagnostic evaluation with computerized transmission tomography (CTT), metrizamide CTT cisternography, and angiography indicated an extra-axial tumor in the left interpeduncular cistern, extending into the suprasellar and prepontine cisterns. A meningioma was demonstrated with attachment only to the interpeduncular portion of the left oculomotor nerve. The patient was treated successfully by complete removal through a pterional approach.     

外伤性动眼神经麻痹的临床特点分析

目的总结轻型颅脑损伤所致动眼神经麻痹后的临床特点。方法通过眼外肌运动、眼睑活动、瞳孔大小分析20例轻型颅脑损伤患者动眼神经麻痹的严重程度及功能恢复,随访时间平均为14.2月(3个月~2年)。结果 15名男性患者和5名女性患者纳入此次研究。最常见的外伤原因是交通事故65.4%(13例);眼内肌麻痹是最常见的临床症状;上睑下垂、眼外肌麻痹和眼内肌麻痹的恢复率分别是95%(19例),83.3%(17例)和50%(10例)。结论眼球活动受限是影响轻型颅脑损伤动眼神经麻痹患者生活质量的一个主要因素;蝶骨骨折可能是一个潜在的机制参与了外伤性动眼神经麻痹的发生。