a syndrome associated with partial deletion of the short arm of chromosome 4, characterized by an undersized head, increased distance between the eyes,
epicanthus,
cleft palate, a small receding mandible, low-set ears that are simplified in form, undescended testes, and
hypospadias.

Facial view of a 3-year-old child with the Wolf-Hirschhorn syndrome. From Mueller and Young, 2001.