Carciniod Tumor

Hello!  I am a 32 yr old female.  3 years ago I had a colonoscopy due to minor bleeding with stools (after the colonoscop. the Dr said it was likely from small hemmeroids).  However, they found a small 3mm polyp in my rectum that they removed and byopsied.  They cam back and told me it was a carciniod tumor and that they removed it all and not to be worried (of course I was terrified that I had cancer).  They told me to have another colonoscp. in 3 years (which is now).  I can help but be SO scared that it has spread or gotten worse or another will be there.  I have had no symptoms, but have heard that these tumors can cause no symptoms.  What are the chances of any of these actually happening?  Can they reoccur?  What's the likleyhood?  Is it better that it was only 3mm?  Any info is helpful.  I am the mom to 2 small kids and am terrified that something bad could happen!  Thanks!

[Kevin Pho, MD]

Carcinoid tumors are characterized by slow growth. The prognosis of carcinoid tumors is based on the size, invasiveness and microscopic characteristics (histology).

5-year survival rates are as follows:

* Localized tumors (no spread)

[mcaseyw]

how would you know if they have spread?  Is this something they would have checked for when they found it?
Thanks!