How are intermediate atherosclerotic lesions?

• Flat Gelatinous • Macroscopy: ➢ Greyish, translucent plaque on the intima, 0.5 to 1 cm in diameter. • Microscopy: ➢ subendothelial edema (rich in chondroitin and heparan sulfate, but lacking lipids). ➢ These lesions are due to an “exudate", i.e. the passage of plasma under the endothelium by increasing endothelial permeability. ➢ These lesions can regress, turn into fibrous plaque, or they can become lipid-laden and develop into atherosclerotic plaques.