[Clindrical battery in the stomach in the Instituto Nacional de Salud del Niño, Lima, Peru]. 
The ingestion of foreign bodies (EC) is a problem commonly seen by pediatricians and emergency physicians.  The intake is almost always accidental and most common objects are coins, pieces of toys, jewelry or batteries.  The button batteries are the most common, in which case is important early diagnosis and removal.  The cylindrical battery ingestion is very rare, are typically alkaline manganese or nickel-cadmium (rechargeable) and when ingested they can cause toxic and corrosive damage.  Such damage may occur as a result of the effect of acid gastric contents sustained over a period of days or weeks.  We report the case of a patient who accidentally ingested a cylindrical battery, which was removed from the stomach endoscopically without complications.