Primary hydatid disease of breast: a case report.

Human hydatid disease, or echinococcosis, is a helminthic infection that leads to the formation of fluid-filled cysts in the liver, lungs and other organs. Breast, is a rare primary site of hydatid disease. We report a case of a 45 years old female who presented with a breast lump of 2 years duration. On fine needle aspiration cytology a diagnosis of fibrocystic changes of the breast was made and ultrasonography breast showed a thick walled infected cystic lesion. Intraoperatively, a diagnosis of hydatid cyst was made which was confirmed on histopathology.