I think they said he had cysts of the Tapeworms all over. I think that most of them just absorb nutrients from whatever body fluids they can. I guess its possible for the ones in tissue to move back to the digestive tract through the liver. Also when worms can't get the nurtients they need or the environment is hostile they go into a hibernation until things get better. Only some latch on. They say the Ascaris just continually swim againt the peristalis but I don't beleive that because I had one crawl out alive that was excreting a spider web type stuff that it hung from. I think They excrete that and hang on it. It was a male worm so it wasn't excreting eggs. There is so much that we don't know with these things.