Poland syndrome

Overview

Poland syndrome is characterized by anatomic abnormalities such as the absence of the sternocostal head of the pectoralis major muscle, as well as other symptoms such as hypoplasia or absence of the pectoralis minor muscle and digital deformities such as syndactyly. Other abnormalities include ipsilateral breast hypoplasia or absence, excavatum deformities, and rib aplasia. Defects are almost always unilateral and affect the right side more frequently.

This condition is almost always sporadic. It is more frequent in males than in girls and tends to appear on the right side. The abnormalities of the chest wall are often corrected surgically.