“…Primary hydatid cysts of the gallbladder are rare; however, cysts can be located in the lumen of the gallbladder or on its external surface. Therefore, the spread of echinococcal embryos through lymphatic circulation after intestinal absorption is possible, and may explain the cysts in the lumen of the gallbladder [1][2][3] . Primary hydatid cysts of the gallbladder are an unusual and are a very rare localization of hydatid disease; as such, they must be segregated from gallbladder daughter cysts secondary to liver primary hydatidosis.…”