Stenosis

(sten-o' '-sis). Constriction or narrowing of any pore, duct, ve el, or pa age. S., Aortic, a narrowing of the aortic orifice at the base of the heart or a narrowing of the aorta itself. S., Cardiac, as a consequence of inflammation of the connective ti ue in the myocardium, the conus arteriosus upon either side of the heart may become diminished in diameter, with consequent hindrance to the free pa age of blood from the ventricle into its corresponding artery. This constitutes what is called stenosis of the heart. The second sound is fully formed and sharply defined, thus distinguishing the condition from valvular stenosis. S., Cicatricial, stenosis due to a contracted cicatrix. S., Granulation, narrowing caused by encroachment or contraction of granulations. S., Mitral, stenosis of left auriculo-ventricular orifice. S., Post-tracheotomy, stenosis after tracheotomy. S., Sub-aortic. See S., Aortic. Steno stegnosis, Steno stenosis.