Abstract
Background: Although classical opercular syndrome is a well-known condition, the unilateral posterior form of it is quite rare, and is of interest to neurologists.
Case Report: The case of an elderly man, who developed sudden left hemifacial weakness, left hemiparesis, and paresthesia of the same side of the face, as well as dysarthria, dysphagia and hypophonia with automato-voluntary dissociation, is presented. Sixteen months later he still had hypophonia, but could open his mouth voluntarily more than previously, with partial left hemifacial weakness. No hemiparesis or dysphagia was observed. The case is compared with previous cases and differential diagnoses are discussed.
Conclusions: A unilateral posterior type of the opercular syndrome can also be seen in clinical practice, and requires specific attention.

Keywords: Unilateral posterior opercular syndrom, opercular syndrom, Neurology