A congenital condition, in which the chest is depressed in the centre because the lower part of the breastbone is curved backwards.
A congenital deformity of the bony thorax in which the sternum, particularly the xyphoid process, is bent inward, creating a hollow depression in the anterior chest; treatment is often surgery.
A chest abnormality characterized by the indentation of the sternum (breastbone) inward, also known as “funnel chest.”