Hydrophilic guide wire-related renal artery perforation (RAP) and subsequent retroperitoneal hemorrhage (RPH) during coronary angiography (CAG) is very rare. We present the case of a 68-year-old woman who suffered accidental hydrophilic 0.035-inch guide wire piercing-related RAP and RPH during CAG and coronary intervention. This RAP was diagnosed by bedside ultrasonography and selective renal angiography, and was successfully treated by transcatheter polyvinyl alcohol injection.
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