'I'm likely to have a heart attack': Sandilands reveals another health blow

The KIIS FM presenter told co-host Jackie 'O' Henderson that a "very bad calcium build up" was discovered in his heart after undergoing tests.

The 53-year-old said he had a 25 per cent chance of having a heart attack within five years if he left the condition untreated.

It's the second serious surgery the radio host is considering after revealing an aneurysm was found in his brain on February 3.

He has been discussing his options, to either operate on or monitor the aneurysm, with surgeons and specialists.

"The aneurysm is at a Y junction and it is at the top," he told listeners.

"The shape of it has limited the operation they can do.

"The only option to get to it is to [open the skull].

"That will mean I have this huge scar from the forehead to top of ear and they would have to drill a hole in my skull, go into the brain and clip it off."

Mr Sandilands, who is father to a 2-year-old boy, has previously said he would have to miss between two to eight weeks of broadcasting to recover from the brain surgery.