A 31-year-old patient had acute dizziness and lateropulsion to the right. Neuro-ophthalmologic examination revealed (1) a saccade gaze palsy left (video 1, part A), (2) “half-pathologic” head-impulse test right B), but (3) bilaterally normal adduction during convergence reaction C), findings typical for abducens nuclear palsy. It was caused by histologically proven cavernoma in tegmentum pontis...
