Difficult to speculate without evaluation.
The time course of an esophageal stricture can vary by patient. Normally they develop over time. Because of this, it is possible that it was present during the time you spent in the Marines.
Normally esophageal strictures are dilated endoscopically - but they can recur.
The GERD can be further evaluated with a 24-hr pH study. If the Protonix is not helping with the discomfort, surgical therapy can be considered.
These options can be discussed with a GI consultation.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
kevinmd_