our 23 year old son has chronic stomach pain, and also has chronic sinus infections. Had abdominal surgery for lower bowel intususseption, which had been seen on a CT scan . Dr. said intestines, etc. looked great and healthy, no intususseption was found. Took out a scarred appendix and some fatty tissue , all benign. Two months after surgery he has the same pain. We are stumped. Is there any connection between chronic stomach pain and sinus infections?