10/14/2014 01:53 EDT | Updated 12/14/2014 05:59 EST

Former 'Dragons' Den' personality W. Brett Wilson tweets his cancer is back

TORONTO - Former "Dragons' Den" personality W. Brett Wilson says his cancer has returned.

Wilson, a Calgary-based entrepreneur who spent three seasons as a panelist on the CBC series, tweeted the news Monday.

"Yup — my cancer is back — but w/ 2 months of radiation & all sorts of other modalities I will be #KickingCancersAss," he wrote, also including the hashtag #CanadianThanksgiving.

In a prior tweet, he wrote he was "grateful for having beaten cancer 13 years ago — & for the opportunity to be #KickingCancersAss again."

Wilson, 57, was diagnosed with prostate cancer in 2001.

He co-founded brokerage firm FirstEnergy Capital in 1993 before going on to become a philanthropist and bestselling author. He departed "Dragons' Den" in 2011.

Wilson was not immediately available for comment Tuesday.