Welcome to sanity and knowledge.
[] Omentum..."The omentum is a loose fold of the membrane ( peritoneum ) that hangs from the stomach and covers the front of the intestines. It protects the intestines and helps to seal any damage to the intestinal wall, thus helping to prevent infection."
http://my.webmd.com/content/dmk/dmk_article_1458702
This is a direct quote from a post by Helen Dynda. If you browse through the archives, any post with her name on it is almost guaranteed to answer a question or two, or at least point you in the right direction to get answers.
As for dealing with your gynecologist, I'm not sure what to tell you on that point. My gynecologist is the one who did the exploratory lap and found adhesions when he was looking for endo. He did lyse some of the adhesions, but did not feel comfortable dealing with the ones involving the bowel and omentum.
I'm sure one of us here will have some suggestions for you. We are a very helpful and supportive group.
Pain-free days.
Nancy in NB
ICQ #9683431