Poster Session：PS 1123 ; Gastroenterology (Liver) : A Cystic Echinococcosis of the Liver: A Rare Case of Parasitic Zoonosis = Poster Session：PS 1123 ; Gastroenterology (Liver) : A Cystic Echinococcosis of the Liver: A Rare Case of Parasitic Zoonosis

다국어 초록 (Multilingual Abstract)

Background: Echinococcosis, so called hydatid disease, is a representative zoonosis. Human cystic echinococcosis usually occurs as a result of infection by the larval stage of species Echinococcus granulosus, genus Echinococcus, via the ingestion of food and water fecally contaminated with eggs from the primary hosts such as dogs and wolves. Case: A 58 year-old male was admitted for further evaluation of liver cystic mass detected on routine examination of liver ultrasound. He was an immigrant worker from North-East China 4 year ago. At the time on admission, past medical history, physical examination, and laboratory findings including tumor markers showed no specific. Computed tomography and magnetic resonance imaging showed three cystic nodular lesions with calcifi cation in the liver: one 9 cm-sized exophytic cyst with daughther cysts (cysts in cyst) on left lateral segment; another 3. 5 cm-sized cyst with a focal wall calcifi cation on segment 8; and the other 2. 3 cm-sized dense calcifi ed nodule on segment 4. Surgical resection was performed for diagnostic confirmation and complete removal. Grossly, the left liver mass showed a lobulated cyst with a well-demarcated, reddish yellow-colored, and smoothy round nature, measuring 9. 5x9,5x8. 5 cm. The cut-surface of this cystic mass showed a yellow-colored unilobular cystic wall containing variable-sized membranes with a thin, transparent, and fi abby appearance. Microscopically, Brood capsules containing protoscolices of E. granulosus were scattered on the laminated cystic walls with germinal layers. Two other cystic masses revealed calcifi ed degenerations. After successful recovery without any complication following surgery, the patient was discharged with the medication of antihelminthic albendazol 400 mg twice daily, with a fat-rich meal for 4 weeks. Conclusions: We report a case of cystic echinococcosis of liver with typical fi ndings of radiological and histological features in immigrant worker from China.