Hi,
First of all, there are a few other sites that will give you more information and support. Go to the Carcinoid Cancer Foundation'swww.carcinoid.org. Another very informative site isCARCINOID@LISTSERV.ACOR.ORGand it has a NETs specialist available to answer your e-mail questions. His name is Dr. Woltering. You can call him as well. Also, there is a private/closed facbook page called the Zebra Zone with many loving survivors there for you and your daughter.
Your daughter is presenting classic carcinoid symptoms. Some scans that she should be receiving include an octreoscan, abdominal MRI, Tri-phase CT of abdomen and pelvis. Blood work should include a Ki67 proliferation test of the specimen, CgA, gastrin, serotonin, norepinephrine and other adrenal tests. You daughter might as well get a neck ultrasound unless she had a CT scan that would detail the thyroid.
Please continue the pursuit of finding the primary. There could be more than one primary, especially if there was a carcinoid on her appendix. Make sure she receives an endoscopy along with her colonoscopy and go to someone that specializes in NETs/GI cancer.
I had papilary thyroid cancer and a total thyroidectomy in March, 2012. Then I received radioactive iodine treatment (one pill) and went back for a whole body scan in May. Something lit up in my abdomen which could have been residual RAI. I had to get a colonscopy and politely demanded an endoscopy too just to be safe...sure enough they found a 2 mm carcinoid in my duodenal bulb. I have been educating myself and others since my experience. Hopefully it is a one time thing that was caught early. I do not have symptoms of carcinoid.
You and your daughter are your own best advocates. Keep looking and seek other opinions from other doctors as not many are well-versed in NETs.
Keep in touch! You and she are in my prayers!
Angel