Former Collingwood footballer and current star of The Block: Triple Threat Darren Jolly has undergone surgery to remove a lesion from his brain.

Jolly, 32, underwent surgery last week in a Melbourne hospital to remove the tumour, after suffering persistent headaches.

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He is now awaiting the results of a biopsy to determine whether the lesion was malignant, according to News Corp.

The sad news comes as Jolly and his wife, Dea, star on the Nine Network’s hit renovation show.

An onset source told News Corp that Jolly was “seriously unwell” while filming the series.

Doctors found a lesion and fluid in his brain, which was causing the headaches and he subsequently underwent a ventriculostomy in a Melbourne hospital, a Nine spokesman said.

“His surgery went well and two incision points were created to drain the fluid, which have eased the pressure and headaches.

“A biopsy has been taken to determine what the lump is, which at this stage is unknown.

“Darren will know more about his condition over the next week. Until then there will be no further comment and he and his family respectfully request privacy while they navigate their way through this serious and sensitive issue.”