Dr Charlie Teo has told a medical disciplinary hearing he has more expertise in brainstem tumours than almost anyone in the world. 

The NSW Health Care Complaints Commission inquiry is investigating the circumstances surrounding two brain tumour operations performed by Dr Teo that left the patients with catastrophic brain injuries.

Appearing before the commission in Sydney on Thursday, the 65-year-old disagreed with two other neurologists, Professor Bryant Stokes and Associate Professor Andrew Morokoff, who had appeared as expert witnesses the previous day.

Their evidence related to whether one of the patient’s tumours had spread to the left side of the brain, which both experts said it had, but Dr Teo said in his medical opinion that was not the case.