Flattening of the diaphragm

A.Prof Frank Gaillard et al.

Flattening of the diaphragm is the most sensitive sign on chest radiographs for the presence of hyperinflation of the lungs, usually due to emphysema 1-2.

The normal dome of each hemidiaphragm should rise at least 1.5 cm above a line connecting the costophrenic angle posteriorly and sternophrenic angle anteriorly 1.

Chest
Share article

Article information

rID: 9201
System: Chest
Section: Approach
Synonyms or Alternate Spellings:
  • Flattened hemidiaphragms

Support Radiopaedia and see fewer ads

Cases and figures

  • Figure 1: flattening of the diaphragm measurement
    Drag here to reorder.
  • Case 1: marked hyperinflation
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.