Khloe Kardashian revealed a huge scar on her face after opening up with her struggles with a "deadly" melanoma that is "way more serious" than she first thought.
A shocking new teaser trailer saw viewers learn about her terrifying and "concerning" health scare and the impact it has had on her life.
Fans saw the jagged scar on her cheek where doctors removed the melanoma, type of skin cancer that initially forms as a mole and develops from skin cells called melanocytes.
It can usually be treated with surgery if it's found early.
Throughout the trailer, Khloe is pictured going into an MRI scan and later with a huge bandage on her face following the removal.
The 38-year-old's family members and close friends remain worried for Khloe.
Her sister Kylie Jenner addressing the mark and hinting at the Good American founder's scary diagnosis.
"Mom just told me that it was Melanoma," Kylie said in the clip.
Khloe told them: "Melanoma is deadly. This was way more serious than I anticipated it to be."
Kris Jenner, 67, said: "This, on her face, is very concerning."
Kendall, also concerned for her sister, adds: "She doesn't sleep, she's lost a lot of weight."
In another scene, fans got another glimpse of Khloe's bandaged.
In a serious sit-down with her best pal Malika Haqq, she was told: "I don't think I've seen you this low.
Khloe then explains that she underestimated the seriousness of the issue, saying: "Melanoma is deadly, this is way more serious than I anticipated it to be."
As well as Khloe's health battle, viewers will watch as she co-parents with her ex-boyfriend Tristan Thompson, who she shares five-year-old True and a son, who's name she is yet to share publicly, with.
In the trailer, she tells Scott Disick: "I think he thinks, 'Let's just ride this out,' but no, no chance."
Elsewhere in the clip, Kourtney's feud with her sister Kim is finally explained, with Kourtney believing Kim used her wedding to Blink 182 drummer Travis Barker as a "business opportunity".
