Just as different patients heal at different rates and make different scars, so do some patients heal around their surgery more than others. In a few patients this increased healing of the circular "scar" at the "new stomach" outlet may result in the outlet narrowing down (Stenosis). This can usually managed fairly easily by endoscopic dilation within the first three months after surgery. Surgical correction of the problems is rarely required.

Can the outlet narrow down and cause vomiting?