I had my Medtronic Sure Scan pacemaker/ICD replaced for battery. The EP reported something she said she has not ever seen in 20 years. My device was coated in a yellow goo inside the pocket. She sent it out for a culture. I have not been having any pain, itching or rash around pacemarker site. Has anyone on here every heard if this.I do have silicone breast implant, wondered if they may have leaked into pocket? I will forward any info to EP. She is a top doctor at Duke University Hospital in Durham, NC. Very good.