[Certain foreign bodies can remain in the stomach without complications]

It is usually recommended that swallowed foreign bodies with a length of more than 6 cm be endoscopically removed from the stomach. In this case report five cutlery knives had been ingested by a female patient with borderline personality disorder who repeatedly ingested foreign objects. It was considered too risky to remove the knives endoscopically and they were left in situ. After three years, without admission due to the knives or other swallowed foreign bodies, the patient spontaneously vomited two of the five, now very eroded, knives. Later, the remaining knives were removed at a hospital abroad.