In the woman’s case, the endoscopy showed “the presence of live nematodes [worms] in the descending portion of the patient’s duodenum,” which is the beginning of the small intestine.

Stomach-churning images have captured the moment doctors discovered bloodsucking worms writhing in a woman's intestine. The 75-year-old farmer had battled sleep issues, a poor appetite and ...

They typically form a colony within the first part of the large intestine (the caecum). But their most noticeable effect appears to be on the back passage, since the female worms migrate there ...