The face is a characteristic with wide palpebral fissures, wide fontanels, elongated skull, drooping eyelids, small head, small jaw, small sternum, double toes, cleft lip
[symptoma.com]
Common features of trisomy 18 include a low birth weight; a small jaw and mouth; an abnormally shaped, small head; overlapping fingers and clenched fists; and defects in the
[emedicinehealth.com]
There are also genitourinary problems such as small penis or undescended testes in case of male patient.
[symptoma.com]