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In medicine, stenosis or estegnosis ( of GR. aa½ea¹a, " shrunk " ) It is a term used to denote the constriction or narrowing of a hole or through body. You can be original congenital or acquired by tumors, thickening, or hypertrophy, or by infiltration and fibrosis of the walls or edges luminal or valvular heart disease.It can be physiological as in the case of oesophageal and aortic stenosis or even own uterine isthmus is the result of stenosis.