enlarged aortic valve thick aortic valve thick aortic semilunar valve thick left arterial valve TAV thick left semilunar valve 2010-10-05T04:05:30Z csmith thick left ventriculoarterial junction thick left semi-lunar valve MP:0010594 thick aortic semi-lunar valve MPheno.ontology thickened aortic valve an increase in the ratio of the aortic valve wall thickness to the aortic wall thickness thick semilunar valve increased thickness of the aortic valve