In some instances, diagnostic tests can be as serious and invasive as the actual treatment, and a prime example of this is in the oral biopsy. Requiring a sample of tissue in order to identify what the cause of an illness might be, it's also a procedure that requires careful planning and skill. 

Professor Khoo Suan Phaik, oral physician, tells us more bout the procedure and explains why 'When in doubt, have it out.'

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Tags:  oral physician,  oral biopsy,  lesion