Guerrero A L, Cacho J
Servicio de Neurología, Hospital Universitario, Salamanca, España.
Rev Neurol. 1998 Jul;27(155):79-80.
Lesions of the fourth cranial nerves are infrequently diagnosed in cases of disorder of the oculomotor nerves. Most authors consider head injury to be the usual cause of this lesion, which is also frequently seen in association with a microvascular lesion in persons with blood flow problems.
We present the case of an isolated lesion of the trochlear nerve as a consequence of midbrain ischaemia.
Vascular disorders of the brain stem are an uncommon cause of paresis of the superior oblique muscle of the eye and exceptional as the only symptom.
动眼神经紊乱病例中，滑车神经损伤很少被诊断出来。大多数作者认为头部受伤是这种损伤的常见原因，在有血流问题的人群中，这种损伤也经常与微血管病变相关。
我们报告一例因中脑缺血导致的孤立性滑车神经损伤病例。
脑干血管疾病是眼上斜肌麻痹的罕见原因，作为唯一症状则更为罕见。
