Ingestion of button batteries by children is increasing every year, which is becoming a clinical problem for pediatricians. The number of complications and mortality when using batteries exceeds similar indicators when accidentally swallowing other foreign bodies. This is due to the electrochemical and mechanical effect of the battery on the mucous membrane of the gastrointestinal tract and especially the esophagus. With a late diagnosis, an ordinary battery leads to the development of fatal complications. In modern literature, there are no protocols that would relate to the treatment of similar situations, in particular, in the development of a tracheoesophageal fistula. The article describes a case of successful treatment of a tracheoesophageal fistula due to a long-term stay of a battery in the esophagus. This condition was also complicated by the development of bilateral tension pneumothorax. The dilemma in such cases is always difficult: to choose operative or conservative treatment. Both methods have their advantages and disadvantages. In this clinical case, preference was given to conservative treatment, which ended quite successfully. But the main goal is to prevent such situations. This can be achieved by raising parents' awareness of the risks of battery ingestion. Also, the efforts of a doctor who is faced with a similar situation should be directed to the fastest possible diagnosis and removal of such a foreign body as a battery.
Keywords: tension pneumothorax; conservative treatment; foreign bodies; tracheoesophageal fistula.