Poisoning from an exposure to an oven cleaner.
Expectations (prognosis)
The prognosis (probable outcome) depends on how rapidly the alkali is diluted. Extensive damage to the mouth, throat, and stomach are possible. The ultimate outcome depends on the extent of this damage. Damage continues to occur to the esophagus and stomach for several weeks after the alkali was swallowed. Death may occur as long as a month later.