Rachel Maddow shares a vital message with her viewers after being diagnosed with skin cancer.

The MSNBC host recalled during a recent episode of “The Rachel Maddow Show” that she was at a minor league baseball game with her partner, Susan Mikula, who noticed at the time that a mole on Maddow’s neck had “changed.”

“I had no idea what she was talking about,” Maddow recalled.

She stated that she tried to ignore it, laughing at Mikula for not having noticed the mole previously because it was on Maddows left side. Maddow drives. Maddow also speculated that the change in appearance could’ve been due to a “mosquito bite or sunburn or something.”

But Mikula was steadfast, insisting, “We’ve been together 22 years. Maddow stated that the mole had changed. Mikula suggested Maddow then ask Diane, her hairdresser, who she has known for over 20 years.

“(Diane] immediately said, “Yes, I was going tell something about it. This mole has changed. ‘”

Maddow said she decided to have a checkup with a dermatologist, who did a biopsy and discovered it was skin cancer. She said that she had surgery at a New York City hospital and that they got everything. Maddow had to be absent from work for a few days, and she now needs regular checkups.

“Susan was correct, as she always is. She added, “I am going to be absolutely fine.”

Maddow continued to emphasize to viewers the importance getting moles .. While skin cancer is the most common cancer in the world, 99 percent of cases are treatable if they’re caught early, according to the Skin Cancer Foundation.

” Schedule a visit with your doctor now,” she stated. Then, if your doctor says you are fine but it is a good idea to do this every year, you can put it on your calendar for one year and then come back to your follow-up appointment.

“It’s only by the grace of Susan that I found mine in enough time that it was totally treatable, because I have been blowing off my appointments forever to get stuff like that checked because I’ve assumed it will always be fine. “

Maura Hohman

Maura Hohman is an editor with TODAY.com.