A 17-year-old male admitted to Rikshospitalet exhibited the triad of symptoms known as Ménière''s syndrome. Neuroradiological and audiological tests revealed (a) an abnormally large anastomosis between the left vertebral and occipital arteries which appeared to shunt blood away from the vertebral circulation, and (b) a hearing loss in the left ear consistent with cochlear pathology. Resection of the abnormal communicating vessel was followed by a gradual but remarkable improvement. The tinnitus ceased within 3 months; normal hearing was measured within 16 months, and the hearing has remained normal; attacks of vertigo have not been experienced during the 3 and ¾ years since the operation. There are reports of longstanding spontaneous remissions in patients exhibiting Ménière’s syndrome. It is, therefore, on the basis of the longlasting postsurgical symptom-free period, not permitted to draw any definite conclusions as to the cause of the postsurgical improvement in our patient. All aspects of our case taken into consideration, a cause and effect relationship between the corrective surgical procedure and postsurgical improvement seems likely. Vascular disturbances should probably be sought more frequently in the Ménière syndrome than hitherto has been the case. This may especially apply to the younger patients.