Patients are frequently admitted to emergency departments after foreign body ingestion and it is estimated that over 1500 people die each year in the USA alone following these incidents. Accurate diagnosis and treatment are therefore crucial in avoiding severe complications in the oesophagus or gastrointestinal organs. Plain X-ray imaging is frequently used in Emergency Departments (ED) for detection, assessment and treatment planning in cases of foreign body ingestion. While most patients are children, ingestions can occur in adults who are mentally unstable, alcoholic, prisoners or drug smugglers. This study reports on the assessment of a mentally unstable patient at the Emergency Unit (EMU) of the Inselspital, Bern, Switzerland.