has part has part characteristic of inheres in has modifier Abnormality of the premaxilla Hyperplasia of the premaxilla 2015-09-28T10:42:23Z Increased size of the primary palate bone Increased size of premaxilla Large premaxilla Premaxillary excess Primary palate bone excess Hyperplasia of the primary palate bone Hyperplasia of the intermaxillary bone Large primary palate bone An abnormality of the premaxilla (the embryonic structure that forms the anterior part of the maxilla) causing it to appear relatively large in size compared to the other parts of the maxilla or other facial structures. UMLS:C4073210 abnormal hyperplastic premaxilla