"They say my healthy lifestyle and diet has no doubt helped keep it from growing and spreading to other areas, as doctors think [the tumor has] been growing in me for minimum 10 years," Mathison wrote.
TV personality Cameron Mathison has revealed he's been diagnosed with kidney cancer.
Mathison, who currently hosts the Hallmark Channel morning talk show "Home and Family," announced the news on Instagram Tuesday. Although the actor explained doctors think his tumor has been growing for a "minimum 10 years," he said he's "optimistic" about his recovery.
Alongside a photo of his family, Mathison began in the caption, "I have a health situation that I want to share with you all. There are many reasons I love social media, staying connected with you all, sharing fun experiences... well this time I'm asking for your help."
"About a month ago, I had an MRI for some gut issues I've been having, and during that MRI they found a tumor on my right kidney," he continued. "It's consistent with Renal Cell Carcinoma ... or kidney cancer. The good news is that it hasn't spread to any other organs."
Mathison added, "They say my healthy lifestyle and diet has no doubt helped keep it from growing and spreading to other areas, as doctors think it's been growing in me for minimum 10 years. I am extremely lucky that we found it early. Thank you to my longtime friend and urologist @jon_giddens who has helped me tremendously through this process."
The former "Entertainment Tonight" host went on to thank his wife, Vanessa, and their two children, Leila, 13, and Lucas, 16.
"Vanessa, Lucas and Leila have been absolutely amazing with their love and support," Mathison wrote. "As have my mom, dad, brother, and everyone at Home and Family, Hallmark, and ET."
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Mathison then asked for support from his followers as he will be getting surgery Thursday.
"My surgery is scheduled on September 12th," he said. "I was hoping to receive positive thoughts, prayers, or whatever you feel comfortable with, on 9/12 (my surgery is at 1pm PST) I announced this on @homeandfamilytv yesterday, and wanted to make sure I posted about it here as well."
Mathison concluded, "Feeling very grateful and optimistic!! #thankyou yes."
The "All My Children" alum received an outpouring of positive support from Hollywood and beyond in the comments section.
Hallmark star and "Full House" actress Candace Cameron Bure wrote, "Absolutely praying for you Cameron, and over the doctors and nurses during your surgery as well as your family."
"Mean Girls" actress Lacey Chabert, who also stars on the Hallmark channel, commented, "Lifting you up in prayer! All my love to you and your family."
Former "Bachelorette" Ali Fedotowsky also wrote, "We love you Cameron. And we are all here for you."