Ostial disease, namely coronary ostial stenosis, is the occlusion of coronary ostium. Causing factors include atherosclerosis, syphilis, Kawasaki disease, and Takayasu's arteritis, etc.

What does ostial mean in medicine?

: a mouthlike opening in a bodily part (such as a fallopian tube or a blood vessel)

What does ostial LAD mean?

Abstract. Background: Ostial disease of the left anterior descending (LAD) or circumflex (LCX) coronary artery is a challenge for the interventionalist. Focal ostial stenting may result in incomplete lesion coverage or plaque shift into the adjacent vessel, creating left main equivalent disease.