There may be aplasia of the sternal head of
pectoralis major, of serratus anterior, and of latissimus dorsi. Unilateral
symbrachydactyly may occur and there may be patchy absence of axillary hair.
Unilateral breast aplasia occurs in females. Chest wall defects are variable and may
include rudimentary development or absence of the anterior portions of the
second to fifth ribs. Absence of bone or muscle from the chest wall may
cause paradoxical respiratory movements. The anomaly may be associated with
dextrocardia, atrial septal defect, contralateral syndactyly, club foot, toe
syndactyly, hemivertebrae, and scoliosis. Renal aplasia, hypospadias, and
inguinal hernia may also occur. Situs inversus has been reported with this
syndrome.