''A. perfoliata'' is found mainly in the caecum, clustered around the ileo-caecal junction, where it causes superficial ulceration and mild inflammation. Generally, it is of little clinical significance, but epidemiological evidence suggests that heavy infections (greater than 20 tapeworms) are a significant risk factor in some forms of colic. | ''A. perfoliata'' is found mainly in the caecum, clustered around the ileo-caecal junction, where it causes superficial ulceration and mild inflammation. Generally, it is of little clinical significance, but epidemiological evidence suggests that heavy infections (greater than 20 tapeworms) are a significant risk factor in some forms of colic. |