Abstract
BACKGROUND: visual disturbances and hallucinations may be linked to a meningioma when the tumor exerts pressure on the brain régions involved on vision or visual perception. OBJECTIVE: to report a clinical case of olfactory sulcus meningioma revealed by visual hallucinations. CASE: Ms EAH, 64 years ils, with no particular medical history, has been followed for two years for declining visual acuity. It was following the onset of visual hallucinations coupled with psychomotor agitation that she was hospitalized on a psychiatric ward. The physical examination revealed a psychosis syndrome involving hallucinatoire delirium associated with involvement of the third cranial nerve and glaucomatous retinopathy. Brain MRI revealed a meningioma of the olfactory groove with suprasellar extension. She was referred to the Neurosurgery Department of the Saint Joseph Moscati Hospital for treatment. A transnasal endoscopic approach was performed 17 days after diagnosis. The short-term postoperative course is uneventful. CONCLUSION: an organic lesion, particularly a meningioma, should be investigated in the presence of visual disturbances, particularly hallucinations.