Cornelia de Lange syndrome (CdLS) is a syndrome of multiple congenital anomalies characterized by a distinctive facial appearance, prenatal and postnatal growth deficiency, feeding difficulties, psychomotor delay, behavioral problems, and associated malformations that mainly involve the upper extremities. Cornelia de Lange first described it as a distinct syndrome in 1933, although Brachmann had described a child with similar features in 1916. Diagnosing classic cases of Cornelia de Lange syndrome is usually straightforward; however, diagnosing mild cases may be challenging, even for an experienced clinician.
