#aterom

• Angiostenosis — A pathological narrowing, either permanent or transient, of the lumen of a blood vessel (artery or vein) or a major lymphatic trunk. This structural phenomenon, most often caused by the deposition of atheromatous plaques, chronic inflammatory processes (vasculitis), or well-defined muscle spasms, significantly reduces circulating blood volume, causing ischemia in downstream tissues and requiring correction via angioplasty or bypass surgery.
• Arteriosclerotic — Feminine singular form of the adjective 'arteriosclerotic'; being affected by arteriosclerosis or showing histopathological modifications characteristic of vascular hardening. It is frequently used to describe specific anatomical structures or correlated systemic disorders.
• Arteriostenosis — A pathological narrowing, congenital or acquired, of the lumen of an artery, structurally caused by atheromatous plaque deposits, inflammatory processes (vasculitis), or prolonged muscular spasms. This phenomenon reduces regional blood flow, causing ischemia of the irrigated tissues and significantly increasing the risk of necrosis or infarction in the affected territory.
• Atheroma — A pathological plaque or deposit composed of lipid substances (especially cholesterol), foam cells, cellular debris, and fibrous tissue that gradually accumulates within the intima tunic of large and medium arteries. Its development leads to the narrowing of the vascular lumen, reduction of arterial elasticity, and disruption of blood flow, representing the fundamental lesion of atherosclerosis.