Patel denies making up patient's tumour

The former surgeon is on trial in Brisbane accused of unnecessarily removing patient Ian Vowles's large bowel and rectum to treat a non-cancerous polyp in 2004.

Patel was called as the first witness for the defence yesterday, the ninth day of the trial.

He told the District Court an examination of Mr Vowles's colon in September 2004 picked up a polyp and a more concerning "flat growth".

The Indian-born, American-trained doctor said the findings raised a flag because Mr Vowles was only 57 and already had two cancers removed from his colon.

However, Crown prosecutor Peter Davis, SC, said there was no independent evidence of the existence of a "flat growth".

It wasn't mentioned in surgical notes and a pathologist's report on tissue samples taken at the September examination referred to just one polyp.

Mr Davis said Patel's own barrister had contradicted the surgeon's evidence in an earlier trial of the same case.