[Melkersson-Rosenthal syndrome - a diagnostic-therapeutic challenge in oral medicine].

Melkersson-Rosenthal syndrome (MRS) is a rare disease and is characterised by the classic triad of cheilitis granulomatosa, lingua plicata and peripheral facia- lis paresis. These symptoms rarely manifest themselves all at the same time, often only one of these clinical signs appears. In the literature, the umbrella term orofacial granulomatosis (OFG) is also used, which covers the occurrence of granulomas in the maxillofacial region without associated systemic diseases.