Case 95. Echinococcosis, unilocular (40 y-o M)

　 　 　 　
　
Surgical specimen of a large unilocular lung cyst in a Thai adult
 　
　 　 　 　

　

 　 A large, thick-walled unilocular cyst is characteristic of infestation of Echinococcus granulosus. The final hosts of this tapeworm are the dog and wolf, and the intermediate hosts are the ruminants and pig.