Primary hydatid cyst with an unusual location--a case report.

Human cystic echinococcosis, a zoonotic infection caused by Echinococcus granulosus, is still a largely extended public health problem in endemic regions (China, Middle East, Mediterranean region, South America, Russian Federation, etc.). Primary echinococcosis may develop in almost any organ (liver, lung, kidney, spleen, mediastinum, heart, brain, bones, pancreas, breast, ovaries, etc.