Glossopalatine ankylosis is a disorder belonging to the group of oromandibular-limb hypogenesis syndromes (OLHS) and is characterized by the presence of an intraoral band of variable thickness attaching the tongue to the hard palate or maxillary alveolar ridge. The disease is glossopalatine ankylosis (Monarch Disease Ontology entry MONDO_0015399). Also known as: Cosack syndrome.