Hi I am a colon hydrotherapist and I see parasites all day everyday except today I saw a leafy looking one (at first I thought it was undigested lettuce ) however today I saw something the size of our viewing tube thick and one third of the length of the tube and there was hardly any gaps it barely made it through the tube, it almost got stuck! I'll measure in the morning our tube and let you know how big it truly was.. This particular client had many parasites.. Threadworm, grey worm and rope worm. I have tried to find info on the lettuce/leafy looking ones except like yourself I can't seem to find much will keep looking and let you know.