A TikTok doctor has revealed his most bizarre discovery while working in the emergency room – a penny lodged up a patient’s bottom.

Benjamin Schmidt, known online as Doc Schmidt, is a 31-year-old doctor from St. Louis, Missouri, United States.

He shares his weird and wonderful experiences on TikTok (@docschmidt) with his 439,000 followers.

In one clip, the doctor reveals a particularly strange experience he had during a colonoscopy with a patient who had a history of colon cancer.

While checking the cancer hadn’t returned and finding the passage to be healthy, he was stunned to spot something silver in the cecum, the part of the colon that is farthest from the anus.

"I was performing a typical colonoscopy – which is something I do four to five times a day – and when I reached the cecum, I found a dime,” Benjamin told Jam Press.

"I had never seen anything like it and the patient had no recollection of swallowing it."

The clip garnered over 1.2 million views, 69,000 likes and hundreds of comments.

One user joked: “He swallowed a penny a few years ago and ya know…inflation.”

Another person commented: “Maybe he swallowed a quarter and was making change.”

Someone else said: "I swallowed a nickel as a kid and I was never worried about it… UNTIL NOW.”

“I retrieved a garden stone that had ‘Carpe Diem’ engraved on it,” another person joked, followed by a laughing emoji.

"You don’t look up people’s b*ms for fun. You get paid for it," said another user.

"I’m curious about the year on the dime," said someone else.

Benjamin said: "This video was hugely popular, I think many videos of unusual medical cases and findings do well because of the natural curiosity of humans.

"Videos about objects found in patients’ rectums certainly trigger a lot of shock but I think this video did particularly well due to the level of mystery.

"That this wasn't found in the rectum, it was found in a part of the colon that couldn't be easily reached so we really don't know how the dime got there!"

Doc Schmidt has come across many other wild stories, including the time a man came in who swallowed an object but didn't remember what it was.

He added: "Another time I was examining a patient's penis due to reports of painful urination and what I first thought was a concerning black spot was actually a distorted scorpion tattoo he had gotten years earlier."

The doctor is particularly proud of his social reach online, with many of his clips going viral.

He said: "I have people reach out and say they are applying for medical school because of me or considering getting the COVID vaccine because of one of my videos.

"Ultimately I love to educate and being able to make a lasting impact on people sometimes in a completely different country is amazing."