Exam 54: Intestinal Trematodes

The life-cycle stages of the intestinal trematodes after the eggs are shed from the body via feces are best described as:

The Heterophyes heterophyes worm,which has a genital sucker that surrounds the genital pore,has a variety of reservoir hosts including dogs,cats,and birds and a second intermediate host of freshwater:

The adult form of the fluke,Fasciolopsis buski,is elongated in shape and ranges from 20 to 75 mm long and 8 to 20 mm wide with an oral sucker at the anterior and a ventral sucker approximately midway to the posterior.The reservoir host for the fluke is:

A 36-year-old man who has traveled for several weeks in the orient is experiencing abdominal pain and diarrhea with a large amount of mucus.A H.heterophyes egg measuring 28 by 15 µm is identified in the stool.The treatment of choice for this intestinal trematode is:

The intermediate host of the Platyhelminthes is freshwater: