An Unusual Presentation of Massive Hydatid Cyst of Liver in a 39-year-old Female Patient

Hydatidosis, a zoonotic infection of the larval stage of Echinococcus granulosus, has a worldwide distribution. Due to the late onset of clinical manifestation, the cyst can involve the greater part of the tissue. This case study was performed on a massive hydatid cyst (HC) (85×115mm), reported in a 39-year-old woman. She was referred to the clinic with right upper quadrant pain and gastric pressure. Magnetic resonance imaging (MRI) revealed that the vast space of the liver had been occupied by the massive cyst in the right lobe of the liver. Routine liver assays were normal. IgG enzyme-linked immunoassay (ELISA) test using antibody was negative (0.19 mg/dL). Resection laparoscopic surgery was scheduled for the patient due to severe pain. The massive HC was confirmed in microscopic examination of the cyst.