<prompt> Van Buchem;s syndrome is characterized by all except:OvergrowthDistoion of mandibleFacial palsyIncreased acid Phosphatase  <response>: Van Buchem Disease: Van Buchem disease hyperostosis coicalis generalisata is an autosomal recessive disorder characterized by hyperostosis of the skull, mandible, clavicles, ribs, and diaphyseal coices of the long bones Most striking clinical features are the enlargement of the jaw and thickness of the skull, which may lead to facial nerve palsy, hearing loss, and optic atrophy Ref: 