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Type presentatieE-poster
TitelIllusory palinopsia as the presenting symptom of occipital stroke
DoelPalinopsia is the persistence or recurrence of visual images after the stimulus has been removed. It has been associated with a wide variety of etiologies such as drugs (illicit or prescription) and migraine, but also head trauma, seizures and structural brain lesions. We report a patient with illusory palinopsia in whom cerebral imaging revealed ischemic occipital stroke.
MethodesCase Report.
ResultatenAn 88-year-old man presented with a month-long history of what he described as “afterimages”: a few seconds after seeing a brightly coloured object, he observed a general blurry non-translucent shape that vaguely resembled a piece of the object. This was preceded by the appearance of coils of white, slowly moving smoke and geometrical shapes arranged in a three by three grid. He also reported visual trailing with lights in motion.
The patient had no spontaneous complaint of visual field alterations, but after automated visual field testing revealed a partial left inferior homonymous quadrantanopia, he confirmed that all above symptoms occurred in the left inferior part of his visual field, irrespective of the place in the visual field of the original stimulus.
His medical history included paroxysmal atrial fibrillation. However, treatment with apixaban had been stopped by the patient himself because of recurrent ecchymosis. Cerebral MRI confirmed an ischemic lesion at the right calcarine cortex.
ConclusiePalinopsia is an unusual symptom but may be the presenting manifestation of a posterior visual pathway lesion. The latter has typically been associated with hallucinatory palinopsia, but can also more rarely occur in patients with the illusory subtype as in our case.
BelangenverstrengelingNee
Auteurs 1
InitialenE
NaamSmoos
InstituutCHU St-Pierre, Ophthalmology
StadBrussels
Auteurs 2
InitialenS
NaamKampouridis
InstituutCHU St-Pierre, Radiology
StadBrussels
Auteurs 3
InitialenT
NaamBuelens
InstituutCHU St-Pierre, Ophthalmology
StadBrussels
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