Dr Su Dan, who works in gastro-intestinal surgery at The Sixth Affiliated Hospital of Sun Yat-sen University told local media the man was diagnosed with a rectal prolapse, which happens when the lining of the rectum slides out of place and ends up outside the body.
Dr Su said: "The patient had rectal prolapse since he was four years old, the bulge was able to retract. But he did not treat the condition and the situation has got worse." Bloody hell, you can say that again, Doc.