Pendular See-Saw Nystagmus: A Rare Presenting Manifestation of Craniopharyngioma

Pendular see-saw nystagmus is an extremely rare form of nystagmus characterised by cyclical movement of the eyes with a conjugate torsional component and a disjunctive vertical component. Intorsion and elevation of one eye is accompanied by simultaneous extorsion and depression of the contralateral eye. Most commonly it results from a suprasellar/parasellar mass compressing the meso-diencephalic region. Herein, we report a case of a 5-year-old girl who presented with pendular see-saw nystagmus secondary to a craniopharyngioma. The nystagmus resolved following excision of the lesion.

摆动性跷跷板样眼球震颤（pendular see-saw nystagmus）是一类极为罕见的眼球震颤亚型，以兼具共轭扭转成分与分离性垂直成分的眼部周期性运动为特征。单侧眼球内旋伴上转时，对侧眼球会同步出现外旋伴下转的运动。该病症最常见的致病原因是鞍上/鞍旁肿物压迫中脑-间脑区域。本文报告1例因颅咽管瘤继发摆动性跷跷板样眼球震颤的5岁女童，其眼球震颤在病灶切除后得到缓解。