The 50-year-old reality star discovered melanoma on her left butt cheek in late August.
"Being diagnosed with melanoma was a big eye-opener. Thankfully, I was one of the lucky ones that caught it early," she told ET on Friday. "I now have a scar to remind me that having a nice tan could have been deadly."
"I beg people to stay out of tanning beds. Most cases are from overexposure to UV light produced by tanning beds," she explained. "I now wear sunscreen every day and need a skin check from head to toe every three months. Go see your dermatologist for a skin check. It could save your life."