An<unk> , or<unk> tous plaque, is an abnormal and reversible accumulation of material in the inner layer of an arterial wall. The material consists of mostly macrophage cells, or debris, containing lipids, calcium and a variable amount of fibrous connective tissue. The accumulated material forms a swelling in the artery wall, which may intrude into the lumen of the artery, narrowing it and restricting blood flow.<unk>  is the pathological basis for the disease entity atherosclerosis, a subtype of arteriosclerosis.
Atheroma
Askin's tumor
Lymphangioma
Hemangioma
Nuchal fibroma
Chorangioma
Ganglion cyst
Baker's cyst