Enterobiasis

Enterobiasis (also called pinworm, seatworm, or threadworm infection) is a benign intestinal disease caused by the nematode Enterobius vermicularis. It is the most prevalent helminthic infection in the United States. 

Intussusception

Intussusception is a process in which a segment of intestine invaginates into the adjoining intestinal lumen, causing bowel obstruction.