Dissolving Potassium Tablets Masquerading as Concealed Foreign Body Ingestion.

Foreign body ingestion is a common consultation for gastroenterologists. Without knowing the object(s) ingested, the differential diagnosis is broad, especially in patients with underlying mental health conditions, such as uncontrolled bipolar disorder, prior suicide attempts, or recreational drug use. The differential should include substances taken with suicidal intent or for concealment of illicit drugs. Certain foreign objects may require urgent or emergent endoscopic intervention. However, one should also consider benign, iatrogenic causes such as large, radiolucent potassium pills given in the emergency department, which do not require further intervention or hospitalization.