It is manifested as the inability to swallow food from the esophagus to the stomach, usually with the presence of nausea and frequent vomiting, weight loss, and malnutrition. The specific cause is not well defined but is attributed to the valve-like muscle at the end of the esophagus, which does not relax to allow the food to be emptied into the stomach. This condition can be resolved through surgery. However, an endoscopic procedure can also provide a solution that may result in less discomfort and reduced hospital stay. In it, a medical-grade balloon is introduced via the endoscope to expand the affected area, completing in one or multiple sessions the complete dilation of the affected muscle.