Diffuse parenchymal disease is a general term describing conditions that affect the working tissue of an organ uniformly rather than creating discrete focal lesions. On ultrasound, this typically manifests as changes in the echogenicity, texture, or size of the affected organ. In the kidneys, diffuse parenchymal disease may show increased cortical echogenicity, suggesting medical renal disease such as glomerulonephritis or diabetic nephropathy. In the liver, it may appear as fatty infiltration or cirrhotic changes. Recognizing the ultrasound patterns of diffuse parenchymal disease is important because these findings often indicate chronic conditions that require medical management and long-term monitoring.
Sonography Term