Poland syndrome with extracorporeal intercostal liver herniation and thoracic myelomeningocele.

Poland syndrome is characterized by hypoplastic unilateral chest wall structures. These chest wall deformities may be associated with upper extremity anomalies. The association of Poland syndrome with either intercostal liver herniation or a spinocerebral deformity has been described, but there is no report of both findings encountered simultaneously. This is the first report of a newborn child with Poland syndrome associated with an intercostal liver segment herniation and thoracic myelomeningocele with features of an Arnold-Chiari II cerebral malformation.