What are the different phases of an infarct?

➢ from 6 (and especially from 24) to 48 hours: the lesion gradually becomes visible. ✓ It corresponds to an arterial distribution area (pyramidal shape with a peripheral base), paler and softer than the rest of the organ, ✓ gradually becomes more distinctly white or yellowish and surrounded by a red congestive border; ➢ During the 1st and 2nd weeks: ✓ The limits of the infarction are becoming clearer and clearer, its surface is depressed compared to the healthy tissue. ✓ It is surrounded by soft, red tissue (inflammatory granulation tissue, then fleshy bud) ➢ From the 3rd week onwards, a whitish, fibrous scar gradually develops, with thinning and retraction of the injured area