has part has part occurs in occurs in characteristic of inheres in has modifier Arteriosclerosis SNOMEDCT_US:107671003 SNOMEDCT_US:28960008 UMLS:C4280568 Although arteriosclerosis and atherosclerosis are often used as if they were synonyms, they are not. Atherosclerosis is the most common type of arteriosclerosis, and is caused by plaque building up in the vessel, which in turn causes sclerosis, increased stiffness, and loss of elasticity of the affected arteries. Sclerosis (hardening) of the arteries with increased thickness of the wall of arteries as well as increased stiffness and a loss of elasticity. SNOMEDCT_US:72092001 Hardened artery wall HP:0002634 UMLS:C0003850 Abnormal systemic arterial morphology sclerosis abnormal increased amount artery