Hyperplasia of midface

What it means

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

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.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Big midface · Hypertrophy of midface · Large midface · Midface hyperplasia · Midfacial prominence · Overgrowth of the midface