Dr Charlie Teo will face a second day of questioning by a medical complaints board, having so far defended his decision to perform two ultimately catastrophic surgeries.
The renowned neurosurgeon is the subject of a hearing by the Health Care Complaints Commission, over concerns including that he offered patients false hope regarding their chance of survival.
Under questioning from the commission's counsel Kate Richardson SC on Thursday about why he disagreed with the evidence of other experts, Dr Teo struck a defiant tone extolling his expertise.