Learning Radiology xray montage

Eventration of the Diaphragm

General Considerations
  • Congenitally thin muscular portion of the hemidiaphragm
  • Appears to increase with age
  • Usually occurs anteromedially and on the right with a right to left ratio of 5:1
  • When on left, it frequently involves the whole hemidiaphragm
  • May contain liver or sometimes kidney on right

Clinical Findings

  • Asymptomatic

Imaging Findings

  • Smoothly marginated soft tissue density contiguous with the hemidiaphragm
  • Appearance is characteristic


  • Not needed


 Eventration of the Diaphragm

Eventration of the Diaphragm. Frontal and lateral chest x-ray shows smooth elevation of right hemidiaphragm medially and anteriorly consistent with an eventration of the hemidiaphragm