Rectal foreign bodies are large foreign items found in the rectum that can be assumed to have been inserted through the anus, rather than reaching the rectum via the mouth and gastrointestinal tract. It can be of clinical relevance if the patient cannot remove it the way they intended. Smaller, ingested foreign bodies, such as bones eaten with food, can sometimes be found stuck in the rectum upon x-ray and are rarely of clinical relevance. Rectal foreign bodies are a subgroup of foreign bodies in the alimentary tract. If the foreign body is too big to allow feces from the colon to pass, a mechanical ileus may occur. The distension of the rectum and the disruption of the peristasis reinforce this effect.
Rectal Contraband. What Would You Do? | Jail Medicine
Rectal foreign bodies are usually objects that have been inserted into the rectum but also may have been swallowed. Sudden and excruciating pain during defecation can be caused by a foreign body penetrating the anorectal wall. Diagnosis is by digital examination and sometimes imaging studies. Removal of a rectal foreign body may be of high risk and should be done by a surgeon or gastroenterologist skilled in foreign body removal. Gallstones, fecaliths, and swallowed foreign bodies including toothpicks and chicken and fish bones may lodge at the anorectal junction. Urinary calculi, vaginal pessaries, or surgical sponges or instruments may erode into the rectum. Some objects are caught in the rectal wall, and others are trapped just above the anal sphincter.
Rectal foreign bodies may present with abdominal pain, anorectal pain, obstipation, acute urinary retention, or blood or mucus discharge from the rectum. Such foreign bodies are often difficult to diagnose, because the history may not be offered by the patient unless he or she is directly asked. Sometimes the patient will not volunteer that any object has been inserted or will give outlandish explanations, such as having sat or fallen onto the object.
It's really not true, tho. David B. Busch and James R.