Jackson Alan, Patankar Tufail, Laitt Roger D
Department of Imaging Science, Department of Medicine, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
AJNR Am J Neuroradiol. 2003 Jun-Jul;24(6):1167-70.
We describe six cases of cannalicular optic nerve meningioma in which the diagnosis was missed for more than 1 year after the onset of symptoms. Clinical features led to a misdiagnosis of optic neuritis in all cases. Although atypical clinical progression led to further imaging studies, they did not provide the diagnosis because of inappropriate imaging protocols. Diagnosis was eventually made on the basis of high-spatial-resolution contrast-enhanced MR findings. Radiologists should have a high suspicion for the diagnosis of optic canal meningioma in patients with unexplained visual loss, particularly when visual loss is progressive. Investigation in these cases should include high-spatial-resolution MR imaging of the orbit before and after contrast medium administration, and fat suppression should be used in combination with contrast enhancement whenever possible.
我们描述了6例泪小管视神经脑膜瘤病例，这些病例在症状出现后1年多都未得到诊断。所有病例的临床特征均导致误诊为视神经炎。尽管非典型的临床进展促使进行了进一步的影像学检查，但由于成像方案不当，这些检查并未得出诊断结果。最终根据高空间分辨率对比增强磁共振成像（MR）结果做出了诊断。对于原因不明视力丧失的患者，放射科医生应高度怀疑视神经管脑膜瘤的诊断，尤其是当视力丧失呈进行性时。这些病例的检查应包括在注射造影剂前后进行眼眶的高空间分辨率MR成像，并且只要有可能，脂肪抑制应与对比增强联合使用。
