Acinar Nodules

Acinar nodules are difficult to distinguish from interstitial nodules. Some distinguishing characteristics are as follows:

Acinar Interstitial
  • Varying in size
  • Indistinct edges
  • Larger than interstitial nodules
  • Same size
  • Sharp edges
  • smaller

Company they keep, i.e., other alveolar densities or interstitial disease, help identify the nature of the nodules.