A rare pathognomonic sign of extracranial vertebral dissection

A 29-year-old woman experienced blurred vision, followed by a 15-minute left lateral hemianopsia. Three days later, a new episode of blurred vision occurred, but this time, it was followed by a 30-minute right lateral hemianopsia that was accompanied by vertigo, dizziness, and decreased sensation in her left hand. Cervical ultrasound examination was performed at the hospital. Probe passage on the right side of her neck was slightly painful....