supravalvar stenosis

su·pra·val·var ste·no·sis

narrowing of the aorta above the aortic valve by a constricting ring or shelf, or by coarctation or hypoplasia of the ascending aorta.

su·pra·val·var ste·no·sis

(sū'pră-val'văr stĕ-nō'sis)
Narrowing of the aorta above the aortic valve by a constricting ring or shelf, or by coarctation or hypoplasia of the ascending aorta.
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