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trisomy 18 syndrome


Definition: a chromosomal disorder that is usually fatal within 2–3 years; characterized by mental retardation, abnormal skull shape, low-set and malformed ears, small mandible, cardiac defects, short sternum, diaphragmatic or inguinal hernia, Meckel diverticulum, abnormal flexion of fingers, and dermatoglyphic anomalies.

Synonym(s): Edwards syndrome

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.