Myocardial strain analysis in infants with pectus excavatum: A subtle method to detect myocardial impairment?

Pectus excavatum (PE) is the most common morphological anomaly of the chest wall, accounting for >90% of all congenital chest anomalies1 and is characterized by posterior depression of the sternum and the adjacent costal cartilages.2 Its severity can be quantified by computed axial tomography or chest x-ray, using the Haller index-the ratio of the width of the chest to the distance between the sternum and the spine.2, 3 A ratio <2.5 is...