Rectal foreign body
Swallowed foreign bodies include catheters, chicken bones, and fishbone; gallstones or fecal stones can stay at the anorectal junction; urinary stones, vaginal rings, or surgical sponges or instruments may erode into the rectum; some peculiar or related to sexual performance The foreign body was artificially inserted and inadvertently incarcerated; some materials were embedded in the rectal wall, some foreign bodies were stuck on the anal sphincter, etc. These foreign bodies entered and corresponding symptoms were called intrarectal foreign bodies.
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