Hennekam syndrome is characterized by the association of lymphoedema, intestinal lymphangiectasia, intellectual deficit and facial dysmorphism. The disease is Hennekam syndrome (MONDO_0016256, a Monarch Disease Ontology identifier). Also known as: Hennekam lymphangiectasia lymphedema syndrome, Hennekam lymphangiectasia-lymphedema syndrome, lymphedem-lymphangiectasia-intellectual disability syndrome, lymphedema-lymphangiectasia-intellectual disability syndrome.