a. On day 11, the EGD showed generalized ulceration of the esophagus
and multiple gastric ulcers
b. On day 32, the EGD showed advanced esophageal stenosis after
corrosive esophagitis
c. On day 37, the EGD showed advanced stenosis where passage was
difficult even with a thin transnasal endoscope 41 cm from the incisor