A patient of former Bundaberg surgeon Jayant Patel says he was offered no alternative to an operation that left him with ongoing health problems.
Patel is on trial accused of unnecessarily removing the large bowel and rectum of then 57-year-old Bundaberg man Ian Vowles in 2004.
Prosecutors say the operation to treat a benign tumour on the wall of Mr Vowles' rectum has left him with ongoing health problems.
They include requiring a colostomy bag, fatigue and impotence.
Mr Vowles, 66, told the Brisbane District Court Patel had told him he would "whip my bowel out" because "your body doesn't like your bowel".
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Patel's barrister Ken Fleming QC said Mr Vowles had given consent for the operation to go ahead because the patient wanted to be sure he was free of cancer.
"You said that that's what you wanted because, quote, 'you wanted it to be over and done with'," Mr Fleming said.
"He gave me no option whatsoever," Mr Vowles replied.
Mr Vowles said Patel had never mentioned any other options, like monitoring him through periodic colonoscopies and removing cancerous growths as they appeared.
Mr Fleming said the operation was the only option that would have made certain Mr Vowles was cancer-free for life.
"That's one of the things that you want, you want to be free of cancers don't you?" Mr Fleming asked.
"And you are, you are free of the risk of colon cancer and bowel cancer aren't you?"
Mr Vowles replied yes.
Patel has pleaded not guilty to grievous bodily harm.
The trial continues on Monday.
