Final answer:
Button batteries lodged in the esophagus should be removed immediately, while batteries estimated to have passed into the stomach usually do not need immediate removal.
Step-by-step explanation:
Button batteries lodged in the esophagus should be removed immediately because they can cause severe internal burns and significant injury or death. This is because button batteries contain chemicals that can leak and cause a chemical reaction in the body. The esophagus is a sensitive area and can be easily damaged by the battery's corrosive materials.
On the other hand, if button batteries are estimated to have been swallowed and have passed into the stomach, they usually do not need to be removed immediately. This is because the stomach has a more acidic environment, which may neutralize the battery's chemicals and decrease the likelihood of tissue damage