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1. hydatid cyst.
2. any cystlike structure.
hydatid disease an infection, usually of the liver, caused by larval forms (hydatid cysts) of tapeworms of the genus Echinococcus, and characterized by the development of expanding cysts. In the infection caused by E. granulosus, single or multiple cysts that are unilocular in character are formed, and in that caused by E. multilocularis, the host's tissues are invaded and destroyed as the cysts enlarge by peripheral budding. Called also echinococcosis.
hydatid of Morgagni a cystlike remnant of the müllerian duct attached to a testis or fallopian tube.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
infection of humans, sheep, and most other herbivorous and omnivorous mammals with larvae of the tapeworm Echinococcus cyst; frequently found in the liver.
Farlex Partner Medical Dictionary © Farlex 2012
hydatid diseaseSee Hydatid cyst disease.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
hy·da·tid dis·ease(hī'dă-tid di-zēz')
Infection with the metacestode larvae of tapeworms of the genus Echinococcus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
hydatid diseaseA disorder caused by ingesting tapeworm eggs so that the part of the worm life-cycle that normally occurs in dogs or pigs affects a human person. The worm embryos enter the bloodstream from the intestines and are carried to the liver, lungs, muscles and brain where they form cysts that gradually increase in size, causing variable damage. Brain cysts can cause EPILEPSY. Surgical removal of dangerous cysts may be necessary.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005