HP_0012371 (Hyperplasia of midface) is 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. Also known as: Midface hyperplasia, Midfacial excess, Midfacial prominence.