Esophageal stenosis occurs when the esophagus is so narrow, making it hard for too-large materials to travel through easily. Narrowing of the esophagus might be caused by a growth, inflammation, or scar tissue. Interestingly, your swallowing tube can be narrowed by as much as 50 percent and you might still have no trouble swallowing.
Sometimes the object causing the narrowing, like a tumor, can be removed. If not, the doctor can discuss options, including simply breaking food into smaller pieces or pureeing it for easier swallowing.