Abnormality of the face Hyperplasia of midface 2013-10-13T02:55:54Z Midfacial prominence Midfacial excess UMLS:C0240309 Overgrowth of the midface Midface hyperplasia Large midface Abnormally anterior positioning of the infraorbital and perialar regions, or increased convexity of the face, or increased nasolabial angle. The midface includes the maxilla, the cheeks, the zygomas, and the infraorbital and perialar regions of the face Big midface Hypertrophy of midface This term represents increased size of the maxilla (upper jaw) in length (increased midface height) or anterior-posterior projection (midface prominence). In the presence of normal mandible size, maxillary prominence may give the appearance of retrognathia. HP:0010279 HP:0012371