“…[13] In many cases, button battery ingestion may occur unnoticed, and children may be investigated after presenting with the symptoms of complications. These include abdominal pain, [6,9,14] respiratory symptoms such as distress and tachypnoea, [6] coughing, [9] wheezing or stridor, [10,13] and symptoms of oesophageal obstruction such as dysphagia, drooling [5,9] and vomiting. [2] Particularly omi nous is a history of haematemesis.…”