Potter facies (lateral)
Features seen here are abnormal ear lobation, micrognathia, and flattened nasal tip. Most of the amniotic fluid is from
renal excretion. Fetal causes of oligohydramnios include renal agenesis, cystic-dysplastic diseases, and obstructions
such as posterior urethral valves. Oligohydramnios sequence also includes pulmonary hypoplasia, musculoskeletal
anomalies such as talipes equinovarus, and nodules of impacted squames in the amniotic epithelium known as amnion nodosa.