Teaching Video NeuroImages: Upbeat and horizontal gaze-evoked nystagmus in bilateral medial medullary infarction

A 41-year-old man with progressive quadriparesis and generalized tingling sensation showed spontaneous upbeating nystagmus and horizontal gaze-evoked nystagmus (video at Neurology.org). The initial diffusion-weighted images showed an equivocal hyperintensity at midline of rostral medulla (upper row). Follow-up MRIs (lower row) showed characteristic heart appearance sign (figure).

Source: Neurology - November 6, 2017 Category: Neurology Authors: Lee, E.-S., Sung, K.-B., Lee, T.-K. Tags: Clinical neurology examination, Nystagmus, All Cerebrovascular disease/Stroke, Infarction RESIDENT AND FELLOW SECTION Source Type: research