21st July 2023

A 78-year-old man is referred to gastroenterology after presenting with a 4-month history of loose stools

A 78-year-old man is referred to gastroenterology after presenting with a 4-month history of loose stools and unintentional weight loss of 8kg in 6 months. He undergoes colonoscopy to investigate for possible colorectal cancer, however, he is unable to tolerate the procedure despite sedation.

What is the next best investigation for this man?

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