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From question on page 10.1136/gut.2006.113233

The abdominal ultrasound demonstrated intussusception of a segment of the ileum. Far more remarkable is the detection of a double-reflective, ribbon-like structure in the lumen of this invaginated segment of the ileum, suggesting the diagnosis of intestinal parasitosis.

The patient was asked to collect stool samples. Repeated examination of these samples remained negative. When the ultrasound findings were discussed with the patient, he reported that he intermittently passed “worms” with his stool. The patient was asked to deliver such a “worm”. Parasitological examination showed that it was a proglottid of Taenia saginata. The patient was treated with niclosamide.

The diagnosis of taeniasis is often based upon the patient’s description of passing mobile proglottid segments. Intussusception due to tapeworm infection is rare. Some worms are more likely to cause intussusception, such as Ascaris lumbricoides, especially in children.13 Frequently this occurs in the ileocaecal region.

We could not find an ultrasound diagnosis of an intussusception due to harbouring a worm infection having been reported previously.

Doctors should be aware that helminths such as as Ascaris and Taenia can be discovered on ultrasound.

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