Poland syndrome is a disorder in which affected individuals are born with missing or abnormal muscles on one side of the chest wall.Most individuals with Poland syndrome also have abnormalities of the hand, which often involve shortened fingers, partial fusion of the fingers, or both.any people with Poland syndrome have hand abnormalities, commonly including an underdeveloped hand with abnormally short fingers (brachydactyly); small, underdeveloped (vestigial) fingers; and some fingers that are fused together (syndactyly). This combination of hand abnormalities is called symbrachydactyly.