Diffuse Parenchymal Pattern

A diffuse parenchymal pattern is characterized by a widespread change in the lung tissue's appearance. This pattern is often a non-specific radiographic finding and can be caused by various conditions, including pneumonia/pneumonitis, hematogenous spread, pulmonary edema or interstitial lung disease. Additional diagnostics are often necessary to determine the underlying cause.
 

The lungs are considered normal if;

• No parenchymal pattern affecting BOTH the cranioventral region and the caudodorsal region is present - small vessels are clearly visible in the cranioventral and caudodorsal portion of the lungs

• Lung pattern ONLY affecting one of the regions
  • Detail of the small vessels is lost due to the presence of an alveolar pattern/overall increased opacity within either the cranioventral or caudodorsal lung lobe.

Abnormal

• Lung pattern affecting BOTH the cranioventral and caudodorsal region.
  • Detail of the small vessels is lost.
  • Presence of an alveolar pattern
  • An overall increased opacity within the cranioventral and caudodorsal lung lobe.