Hydatid

Hydatid, the larval form of the tapeworm known as the Tania eehinococcus (which frequently occurs in the alimentary canal of the dog). The adult worm is never found in the human subject, but the eggs when swallowed by man undergo development, and cysts may be formed in various organs, particularly the liver and lungs, and these cysts by a very gradual process of growth may attain a considerable size. In the cyst are found numerous scolex heads, each with its four suckers and bundle of hooklets, resembling the first joint of the adult worm. The treatment of hydatid tumour is a matter for the surgeon. The disease is common in Iceland, but infrequent in this country.