The individual, a 63-year-old whose identity remains undisclosed, was taken aback by the startling revelation, completely oblivious to the manner in which the insect had infiltrated his body.US Physicians Uncover Fully Intact House Fly Inside Man’s Intestines During Colonoscopy

The medical team was left in awe when, during a routine colon screening in Missouri, they stumbled upon a perfectly preserved house fly in the man’s transverse colon. Upon further investigation, the doctors confirmed the fly to be lifeless. Published in the American Journal of Gastroenterology, this case introduces a peculiar and confounding colonoscopic discovery, leaving the medical community perplexed about the improbable journey of the intact fly into the transverse colon.


The 63-year-old individual, whose identity remains undisclosed, echoed the doctors’ astonishment upon learning about the intact house fly nestled in his intestines. Bewildered, he struggled to comprehend how the insect had made its way into his body. During discussions with the medical team, he recounted a diet consisting of clear liquids, including pizza and lettuce two days prior to the procedure. However, he couldn’t recall encountering a fly on any of the food he consumed. Despite the absence of symptoms suggesting ingestion, the doctors observed no apparent signs in the man.

The team recorded in the journal, “The insect exhibited no indications of autonomous movement or response to manipulation with the scope.” Matthew Bechtold, the Chief of Gastroenterology at the University of Missouri, provided additional insight to The Independent, explaining that he and his colleagues meticulously scrutinized the fly, confirming its lifeless state through delicate probing.

Mr. Bechtold put forth a couple of scenarios regarding how the fly could have reached the man’s stomach—either through ingestion or by entering through his rectum. However, he and his colleagues are still uncertain about the precise route the house fly took to reach the transverse colon. During an interview with the outlet, Mr. Bechtold elaborated that if the fly had entered through the man’s mouth, one would anticipate the upper digestive enzymes and stomach acid to break down the fly. However, the intact state of the fly rendered this hypothesis less plausible.

If the entry occurred from below, it implies that an opening must have been sustained for a considerable duration, allowing the fly to discreetly navigate into the colon and somehow progress to the middle section, characterized by its lack of light and intricate, convoluted structure. Nonetheless, this scenario appears unlikely,” remarked Mr. Bechtold.

In rare instances, there have been reports of flies and their larvae causing infestations in the human intestines, a condition known as intestinal myiasis. However, for this to occur, individuals would typically need to ingest food containing fly eggs and larvae. The National Library of Medicine notes that, although uncommon, there are cases where the eggs manage to withstand stomach acid, hatch, and develop inside the body.

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