Foreign body (gallstone) in the rectum under the mask of a fecal stone

Aim: The purpose of the study: to present a clinical observation of a patient with a foreign body (gallstone) of the rectum. To suggest the migration path of the gallstone into the rectum. Materials and methods: The research work was based on the data of the medical history taken from the archive of the coloproctology department of the BUZ UR “1RKB” of the Ministry of Health of UR. An X-ray phase analysis of a foreign body found in the patient’s rectum was performed. The molecular composition of the foreign body sample has been studied. Results: Patient S., 80 years old, came to the reception department of the coloproctology department complaining of a difficult act of defecation during the week and a feeling of a “foreign body” in the rectum. She did not make any other complaints. During finger examination, a rocky density formation up to 4 cm in size was found in the rectum, which was extracted from the rectum transanally with a manual aid. X-ray phase analysis of the foreign body showed a predominant content of cholesterol compounds in the composition of the stone (75%), which made it possible to establish a final diagnosis: A foreign body of the rectum. A large gallstone. Conclusion: A rare complication of gallstone disease is described - the migration of a gallstone through a formed biliodigestive fistula (cholecysto-colonic) into the rectum. Due to the large size, the gallstone could not pass through the anal canal on its own during defecation, which caused the clinic to have difficulty defecating and a feeling of a “foreign body” in the rectum.

rectal foreign body, gallstone, composite, biomineral, X-ray phase analysis, biliodigestive fistula

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