Image Credit: Sripa B., Kaewkes S., Sithithaworn P., Mairiang E., Laha T., et al. (2007). "Liver Fluke Induces Cholangiocarcinoma". PLoS Medicine 4(7): e201. doi:10.1371/journal.pmed.0040201. Cropped from the figure 2.
Chinese Liver Fluke
Adult worms are mainly found in the gall bladder and bile ducts of the liver, causing inflammation and fibrosis of the adjacent tissues and eventually cholangiocarcinoma, a severe and fatal form of bile duct cancer(who.org).