This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
A child presents to the emergency with a history of ingestion of button battery, on X-ray it was found in the stomach or duodenum. What is the next step? 
Select and explain. 
A. Endoscopic removal of battery, B. Wait and watch, C. Repeat X-ray after 5 days, D. Immediate laparotomy
B: Wait and watch
Answer: B: Wait and watch 
Explanation: Ans: B. Wait and watchRef: NBIH Button bsttery ingestion triage and treatment guideline.The management of a Button battery ingestion depends upon the anatomical site of the impacted battery.Button batteries that have cleared the stomach usually pass through the gastrointestinal tract within one week without complications.Follow-up radiographs should be performed in asymptomatic patients who have not passed the battery by 10 to l4 days, regardless ofsize or earlier if patient becomes symptomatic.