Introduction. Optic pathways cavernomas are rare vascular hamartomas that can present either with an acute chiasmai syndrome or slowly progressive visual loss . Observation. A 29-year-old patient presented with mild u...Introduction. Optic pathways cavernomas are rare vascular hamartomas that can present either with an acute chiasmai syndrome or slowly progressive visual loss . Observation. A 29-year-old patient presented with mild unilateral visual los s of rapid onset and monocular left temporal hemianopia. MRI disclosed a heterog enous enhancing optochiasmal lesion. Work-up found no evidence for an inflammat ory, infectious or tumoral disease and therefore a neurosurgical approach of the lesion allowed diagnosis of cavernoma, confirmed by pathological examination. S uccessful resection resulted in partial recovery of the visual field. Conclusion . Optochiasmal cavernomas are rare, removal can improve visual outcome.展开更多
The diagnosis of ocular myasthenia gravis is rarely in doubt in patients with a proper history and typical clinical findings. However, myasthenia gravis can mimick any pupil- sparing eye movement disorder and several ...The diagnosis of ocular myasthenia gravis is rarely in doubt in patients with a proper history and typical clinical findings. However, myasthenia gravis can mimick any pupil- sparing eye movement disorder and several diseases may masquerade myasthenia g ravis. We review the atypical presentations and differential diagnoses in ocular myasthenia gravis, describing four patients with some of these conditions (4th nerve palsy, near spasm reflex, one-and-a-half syndrome, orbital meningioma). The correct interpretation of the clinical findings associated with appropriate neuro-imaging studies allowed the appropriate diagnosis in these cases.展开更多
Purpose: The vast majority of ruptured aneurysms of the anterior communicating artery typically present with subarachnoid haemorrhage. Isolated visual complaints are very uncommon in this setting. We present an unusua...Purpose: The vast majority of ruptured aneurysms of the anterior communicating artery typically present with subarachnoid haemorrhage. Isolated visual complaints are very uncommon in this setting. We present an unusual case of a patient with an acute retrobulbar optic neuropathy, secondary to a ruptured anterior communicating artery aneurysm. Design: Observational case report. Methods: A 29- year-old woman was assessed for an acute, isolated unilateral optic neuropathy of unknown origin. Although an initial encephalic MRI was believed to be normal, an underlying ruptured anterior communicating artery aneurysm was eventually diagnosed when the patient became stuporous because of intracranial bleeding. Conclusions: Occurrence of an acute retrobulbar optic neuropathy may be the initial isolated sign related to a ruptured anterior communicating artery aneurysm, prompting an appropriate neuroradiological assessment.展开更多
文摘Introduction. Optic pathways cavernomas are rare vascular hamartomas that can present either with an acute chiasmai syndrome or slowly progressive visual loss . Observation. A 29-year-old patient presented with mild unilateral visual los s of rapid onset and monocular left temporal hemianopia. MRI disclosed a heterog enous enhancing optochiasmal lesion. Work-up found no evidence for an inflammat ory, infectious or tumoral disease and therefore a neurosurgical approach of the lesion allowed diagnosis of cavernoma, confirmed by pathological examination. S uccessful resection resulted in partial recovery of the visual field. Conclusion . Optochiasmal cavernomas are rare, removal can improve visual outcome.
文摘The diagnosis of ocular myasthenia gravis is rarely in doubt in patients with a proper history and typical clinical findings. However, myasthenia gravis can mimick any pupil- sparing eye movement disorder and several diseases may masquerade myasthenia g ravis. We review the atypical presentations and differential diagnoses in ocular myasthenia gravis, describing four patients with some of these conditions (4th nerve palsy, near spasm reflex, one-and-a-half syndrome, orbital meningioma). The correct interpretation of the clinical findings associated with appropriate neuro-imaging studies allowed the appropriate diagnosis in these cases.
文摘Purpose: The vast majority of ruptured aneurysms of the anterior communicating artery typically present with subarachnoid haemorrhage. Isolated visual complaints are very uncommon in this setting. We present an unusual case of a patient with an acute retrobulbar optic neuropathy, secondary to a ruptured anterior communicating artery aneurysm. Design: Observational case report. Methods: A 29- year-old woman was assessed for an acute, isolated unilateral optic neuropathy of unknown origin. Although an initial encephalic MRI was believed to be normal, an underlying ruptured anterior communicating artery aneurysm was eventually diagnosed when the patient became stuporous because of intracranial bleeding. Conclusions: Occurrence of an acute retrobulbar optic neuropathy may be the initial isolated sign related to a ruptured anterior communicating artery aneurysm, prompting an appropriate neuroradiological assessment.
