My mom has been suffering weight loss, 30 pounds in 6 mos., she also had what appeared to be thread like thinks in her feces, severe diarrhea, and maybe some dark blood on occasion. She has been tested for parasites and finally had a colonoscopy which determined she has rectal cancer, 1 fairly good sized tumor. My question is can the thread like substance, which is still present, be sloughing of the tumor or the lining of colon? She has only had one chemo treatment so far, and a PET scan showed no evidence of Parasites, we are just having trouble getting a clear answer on where these threads are coming from. Thank you!