TY - CHAP M1 - Book, Section TI - Hydatid Cyst A1 - Langston, Shannon M. A1 - Bales, Brian D. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason Y1 - 2021 N1 - T2 - The Atlas of Emergency Medicine, 5e AB - Hydatid cysts are formed by the larval stage of Echinococcus granulosus tapeworms. The life cycle is maintained between canines and various farm animals (usually sheep or cattle). Adult worms inhabit the canine small intestine, and eggs are passed in the stool. Farm animals become infected when they feed upon stool-contaminated material. The life cycle is completed when dogs or other canines ingest larval cysts formed in infected farm animals. Humans are infected from inadvertent ingestion of canine fecal material and are considered accidental hosts. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/11/03 UR - accessmedicine.mhmedical.com/content.aspx?aid=1181051337 ER -