Introduction
Hydatid cyst is caused by a zoonotic infection with the larva stage (metastasis) of Echinococcus granulosus 1 . This disease is developed in humans through Canidae, including dogs and foxes, and is more common in some parts of the world, such as in the North Khorasan Province, Iran, where several cases have been reported can be health problem 2. These larvae form cysts in the affected organs, which have an infinite membrane that slowly penetrates around and can cause side effects 3.
Liver involvement is often reported to be 50% to 70% of cases during this disease 1. In most cases, cysto-biliary involvement can lead to jaundice and rupture of the abdominal cavity4, while other organs, such as the lungs, kidneys, and spleen, are less frequently affected 1. This study aimed to report a rare complication of hydatid cyst, in which the patient developed hepatic vein and port thrombosis and acute liver failure despite medical treatment, of which less than ten cases have been reported to date.