In simple words: Compression facies is a birth defect where a baby's face appears flattened or distorted due to pressure during pregnancy.

Congenital compression facies is a deformation of the face resulting from compression in utero. This can be caused by various factors, such as oligohydramnios (low amniotic fluid) or external pressure on the developing fetus.

Example 1: A newborn presents with a flattened facial appearance noted shortly after birth. Upon further examination and review of the pregnancy history, a diagnosis of congenital compression facies is made, attributed to prolonged oligohydramnios during the second trimester., A fetus in the third trimester is identified on ultrasound to have unusual facial features. After birth, the infant is diagnosed with congenital compression facies, likely due to a uterine fibroid that exerted pressure on the developing face., A baby born prematurely exhibits some facial asymmetry. While initially attributed to prematurity, continued observation and assessment lead to a diagnosis of congenital compression facies as the asymmetry persists and doesn't resolve with growth.

Documentation should include detailed descriptions of the facial deformities, imaging studies (such as ultrasound or CT scans), and any relevant prenatal history, including amniotic fluid levels and presence of uterine masses.

** Congenital compression facies may be associated with other congenital anomalies. A thorough evaluation for other conditions is necessary.