Fig. 1
From: Consensus based recommendations for diagnosis and medical management of Poland syndrome (sequence)
Transverse over the sternum. Probe placed transversely on the sternum (s) with the insertion of sterno-costal component of pectoralis major muscle (*) on both side of the manubrium and body of sternum, providing immediate information regarding any asymmetry of this component. In order to check the lower part of sterno-costal component is necessary moving with the probe distally to the sixth costal cartilage (c) and the first fibers of rectus abdominis (arrow)