Atherosclerotic plaque

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atheroma The fatty deposit composed of various lipids, complex carbohydrates, and fibrous tissue which forms on the inner wall of blood vessels in atherosclerosis.

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atheroma (ath-er-oh-ma) n. degeneration of the walls of the arteries due to the formation in them of fatty plaques and scar tissue. This limits blood circulation and predisposes to thrombosis.
atheromatous adj.