Pendular nystagmus and palatal myoclonus from hypertrophic olivary degeneration after hemorrhage of the brain stem

• 作者: CHI Xiang-Lin REN Wei-Feng WANG Dao-Zheng YU Yong-Peng
• 来源期刊: 医学争鸣
• 年，卷（期）: 2013,（3）
• 所属期刊栏目: 医海撷贝
• 页码范围: 10
• 页数: 1页
• 语种: 中文

摘要

A 53-year-old man with hypertension developed an acute hemorrhage of brain stem,as seen on CT (Fig.1A,arrow),which resulted in quadriplegia and disturbance of consciousness.Four months later,he complained of reading difficulty because of oscillopsia and could not sit because of equilibrium disturbance.The physical examination revealed pendular nystagmus (two cycles per second) with a predominantly vertical component and some horizontal and torsional eye movements.He also had palatal myoclonus,seen as rhythmic,involuntary contractions of the soft palate and pharyngopalatine arch (one to two cycles per second).T2-weighted magnetic resonance imaging (MRI) showed a symmetrical enlargement of the inferior olivary nuclei with high signal intensity (Fig.1 B,arrowheads).