Poland's Syndrome It is quite rare compared to pectus excavatum and carinatum deformities. The signs and symptoms seen in those who have this syndrome: • Breast tissue or the nipple is small or absent • The chest wall muscles on the affected side are underdeveloped or absent • Subcutaneous adipose tissue is underdeveloped • There is no axillary hair on the affected side • There is a thoracic deformity due to the absence or underdevelopment of the ribs • The arm or forearm on the affected side is short, hand fingers are short (brachydactyly) and there is finger fusion (syndactyly) One or more of these signs and symptoms may be observed.