As far as color/quantity of what comes out in the ole potty, it all depends on what you have IN THERE! Over four years I unloaded tons of stuff that had been velcroed (I presume) to the walls of my poor abused colon, and I saw colors and quantities you would NOT BELIEVE.
If you do quite a bit of juicing or other liquid fasting and still see lots of solid junk coming out, consider a series of professional colonics. You say you do not want to do an enema... trust me, if you have junk stapled to your intestines water is your friend!
A professional colonic therapist is worth the effort to locate. You want someone with state of the art equipment and lots of education/experience who is happy to talk to you about all of this. I initially began with a series of 3 colonics which my therapist assured me was what it took to clean up a normal colon. At least 60 colonics, MUCH juice fasting (incluing a 60 dayer which really helped turn the corner for me) and four years later I attained my goal, turning 50 with a clean pink colon!
So don't rule any tool out if you are serious about cleansing. I have sucked back so many icky mixtures, been hosed, hosed myself, etc. etc. etc. for about ten years, and am here to tell you it has all been worth it!
I presume, and hope, that that lump has been checked by the pros so you have all the information and can make truly informed decisions about its treatment. I wish you radiant good health!