Gross pathology photograph of the membrane and hydatid daughter cysts excised from a human lung. Hydatid disease is a parasitic infestation by a tapeworm of the genus Echinococcus. Endemic areas usually involve third world countries. The liver is the most common organ involved, followed by the lungs.
Hydatid disease. CT scan of the thorax showing hydatid cyst of right lung.
Echinococcus abscess of liver in an adult, the most common site of abscess formation.
Cysts are fused in the liver parenchyma. E. multilocularis is endemic in Hokkaido.
Gross cross-section of liver with a hydatid (echinococcal) cyst.
The cyst consists of a large unilocular cyst with daughter cysts.