It's been years and years since my colonic interposition (CI), where my entire esophagus was replaced by colon, but I still don't whether or not I can vomit. Some people on this site report vomiting, but it's unclear if all the esophagus was replaced or only part. Nor is it clear if their CI was pro- or ant-peristaltic--i.e., reversed relative to the original front-to back direction of peristalsis. No one, including my surgeon, seems to know. Does anyone know the answer--can I vomit? Thanks in advance for your help.