Wow - sorry I never closed this loop. Am writing with the diagnosis in case it's helpful to anyone in the future.
After the surgery last September 2016, the growth was evaluated by three different hospital labs and determined to be Endosalpingiosis, an unusual type of endometriosis that is actually fallopian tube tissue that grows elsewhere in the abdominal cavity. I guess it's associated with higher cancer occurrence, thus the three consults on the labs.
My results were benign, thank goodness and the GI could not identify a connection to Crohn's. But, all four doctors involved (GI, Surgeon, GyN, Uro-Gyn - 3 men and a woman) recommended I get a hysterectomy - at least removing my fallopian tubes. I'm 54 so don't need these things for reproduction any more, but I had just had two surgeries and was reluctant to schedule more. I remember was annoyed that they didn't offer me this option when I was already there having the surgery - would have saved me a third procedure.
As of Summer 2017, I've done nothing - but it's in the back of my mind.
At least for now - mystery solved. Not a CD story after all, but perhaps it will be helpful to someone on the forum someday.
Official dx in TI 2007 with with obstruction and 10 day hospitalization.
mild to moderate since then - frequent colitis Also IBS.
2014/16 - rectocele repair, bladder sling, endometrial cyst attch'd to colon
2017 - Increasing flares / Inflamm in ilieum ("red"), new diverticulitis
Current Meds: Asacol. B12 shots /Prev: Pentasa, 6mp, Cipro, Pred