5.Button batteries as foreign bodies
Most foreign bodies in the ear, nose or even oesophagus, once diagnosed and complications excluded, can wait till the next available theatre list.
However, batteries contain alkali, which is strong corrosives, posing the risk of tissue damage and perforation if leakage occurs. Therefore, button batteries as foreign bodies have to be dealt with as an emergency.
The techniques used are the same as for any other foreign body.