Chris Cairns. (Source: Twitter)

Former New Zealand all-rounder Chris Cairns has been diagnosed with bowel cancer.

“As far as weeks go, I thought that Tom Brady retiring was going to be the low point this week… but as it turned out, TB12’s retirement comes a distant second,” Cairns wrote in his post.

“I was told yesterday I have bowel cancer… big shock and not what I was expecting after what was supposed to be a routine checkup.”

“So, as I prepare for another round of conversations with surgeons and specialists, I keep remembering how lucky I am to be here in the first place… and how blessed I am to have all that I do in my life.”

“Another fight ahead but here’s hoping this one is a swift upper cut and over in the first round.”