Lövblad K O, Remonda L, Ozdoba C, Huber P, Schroth G
Department of Neuroradiology, Inselspital, Bern, Swizerland.
J Comput Assist Tomogr. 1994 Sep-Oct;18(5):728-30. doi: 10.1097/00004728-199409000-00009.
Optic nerve glioma is a common finding in patients with neurofibromatosis type 1 (NF-1). Although dural ectasia of the optic nerve is encountered rarely, it has to be considered in the differential diagnosis.
Three patients affected by NF-1 were examined sequentially by CT and MRI.
Computed tomography demonstrated nonprogressing enlargement of the anterior optic pathways. Magnetic resonance imaging displayed widening of the perioptic dural sheath without any suggestion of tumor.
These findings are compatible with meningocele or dural ectasia of the optic nerve sheath. This entity represents a differential diagnosis to optic glioma in patients with NF-1.
视神经胶质瘤是1型神经纤维瘤病（NF-1）患者的常见表现。虽然视神经硬膜扩张很少见，但在鉴别诊断中必须予以考虑。
对3例NF-1患者依次进行CT和MRI检查。
CT显示视神经前段无进展性增大。MRI显示视神经周围硬膜鞘增宽，无肿瘤迹象。
这些表现符合视神经鞘脑膜膨出或硬膜扩张。该病变是NF-1患者视神经胶质瘤的鉴别诊断之一。
