Hydatid cysts at unusual sites: reports of two cases in the neck and breast.

Hydatid cysts in the neck and breast are rare and are incidental finding in neck and breast specimens. It is a zoonotic disease which is due to infectivity with larval stage of Echinococcus granulosus. The disease is chronic and cysts can be lodged in different organs. It has cosmopolitan distribution and impact health and economical challenges for many countries throughout the world. Therefore, accurate information on the distribution of the disease is first step for the control and prevention. We present two unusual cases of hydatid cyst found in the posterior cervical region and in the breast.