Background: Peduncular hallucinosis is a rare stroke-related phenomenon
that may occur in cases of ischemic lesions localized in the cerebral
peduncles, the pons, the upper midbrain or the thalamus and is mostly
characterized by transient visual hallucinations.
Case presentation: We report the case of an insufficiently treated
hypertensive patient who presented with constantly elevated blood
pressure values and persistent visual hallucinations, which ceased a few
hours later after medically achieved blood pressure normalization.
Magnetic resonance imaging (MRI) revealed a symmetric paramedian
ischemic lesion of the upper pons, which seems to be the cause of this
case of peduncular hallucinosis.
Conclusion: Although uncommon, this entity needs to be differential
diagnostically considered in cases of transient visual hallucinations in
persons with known vascular risk profile. MRI can be a useful diagnostic
tool
