musculoskeletal or connective tissue AE acquired diaphragmatic eventration AE a musculoskeletal system AE that has an outcome of diaphragmatic muscle replaced by fibroelestic tissue. The diaphragm retains its continuity and attachments to the costal margin. However, the weakened hemidiaphragm is displaced into the thorax, which can compromise breathing. URL: http://www.uptodate.com/contents/eventration-of-the-diaphragm-in-infants SJ, YH 10000486