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Pectus Excavatum
Etiology: congenital depression of sternum
Imaging: Haller index = transverse diameter of chest (inner rib to inner rib) divided by AP diameter of chest (back of sternum to anterior part vertebral body) where chest is narrowest, lines should be perpendicular to each other, it needs to be > 3.25
Clinical: corrected by Nuss bar
Cases of Pectus Excavatum
CXR PA and lateral and axial CT without contrast of the chest shows marked depression of the sternum posteriorly leading to deformation of the chest wall.3D reconstruction from a CT without contrast of the chest (above) and an axial CT from the same exam (below) shows posterior indentation of the sternum towards the spine. The Haller index was calculated to be 5.3.Clinical image shows a marked concavity of the chest wall.