Greig has been diagnosed with a form of lung cancer, "Sydney Morning Herald" newspaper reported on Saturday. The report added that he needs to have a biopsy later this week to know about the treatment required. Greig, 66, is a respected commentator and was recently involved with the ICC World Twenty20 2012.
Recently, former New Zealand captain Martin Crowe was diagnosed with cancer.
Speaking to "The Sunday Telegraph" newspaper, Greig said: "I have had a few scrapes in my life and this is another one. Vivian (Greig's wife) and I are going to put the boxing gloves on and fight this like we've never fought anything before."
"Greig realised he had something wrong with him when he commentated during the recent Australia-Pakistan one-day series staged in Dubai," the report said.
Former Australian wicketkeeper Ian Healy told the newspaper: "We are still at the fingers crossed stage. I knew he was crook. I knew he came home from Sri Lanka early (from commentating) and went and had some tests.''
‘‘Everyone just thought that it was probably a flu or pneumonia type of thing but that's not good at all. It's terrible but one thing he is though is tough so Greigy is a better chances than anyone to get through it.
‘‘On the field, off the field he has got so much to fight for too. He has got a lovely family so he will have great support and certainly no shortage of it from us," he added.
Greig turned 66 on October 6. He played 58 Tests and 22 One Day Internationals for England between 1972 and 1977. Greig, born in South Africa, played cricket for England is now settled in Australia. He is part of the Australian Channel Nine commentary team.