Recently, as a part of new stent implantation strategy in order to dec
rease stent thrombosis, final dilatations with high pressure and/or hi
gher sized balloons were applied after the initial deployment of the s
tent. In this paper, we presented a case of chronic coronary pseudoane
urysm which occured after an initially successful stent implantation i
n the left anterior descending artery, probably due to high pressure f
inal dilatation.