Poland Syndrome is a rare chest wall anomaly which is often noticed by the patient’s family in childhood. Physi-ologic and psychologic problems may develop in the following years but rarely need surgery for this pathology. A 13 year-old boy was admitted to our clinic for chest wall shape defect. After the clinical workup, Poland Syndrome was diagnosed. The patient, who had no indication for operation, is being followed up by informing his family. (Gazi Med J 2011; 22: 49-51)