17th July 2020

You see a 35-year-old gentleman with a 3 month history of rectal bleeding, diarrhoea and tenesmus

You see a 35-year-old gentleman with a 3 month history of rectal bleeding, diarrhoea and tenesmus. You suspect ulcerative colitis. Which investigation will confirm this diagnosis definitively?

Select the SINGLE most appropriate option from the list below. Select ONE option only.