Three Cases of Dizziness of Central Lesion that Otolaryngologist can Experience in the Outpatient Clinic

Diagnosis of dizziness of central origin remains a challenge, especially when a dizzy patient visits the outpatient clinic. Recently, we experienced 3 cases of central causes in the outpatient otolaryngology clinic. (1) A 37-yearold woman complaint floating dizziness lasting for 10 months. At the first attack of dizziness, she admitted in other hospital and got brain MRI, which did not reveal any pathologic finding. Temporal MRI showed an intracanalicular schwannoma of left ear. (2) A 70-year-old man with hypertension complaint lightheadedness, disequilibrium and tilting sensation, which developed suddenly two days ago. Brain MRI showed an extra-axial mass at left prepontine cistern, which compresses left pons. (3) A 52-year-old man with diabetes mellitus and hypertension complaint relapsing dizziness lasting for about a half hour 2-3 times a day. Its nature was lightheadedness and presyncope, which developed suddenly together with left tinnitus a half month ago. He complained that his vision was blurred during dizziness attack. Brain MRI showed left tortuous distal vertebral artery compressing medulla oblongata.