Which patient groups are at highest risk for hydatid disease (echinococcosis)?

Updated: May 07, 2019
  • Author: Imad S Dandan, MD; Chief Editor: BS Anand, MD  more...
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No sexual predilection is recognized for hydatid cysts.

Because of the restricted geographic distribution of the echinococcal worms, persons of certain races are affected more commonly than others; however, the parasite has the capability of infecting persons of all races equally.

The cysts grow slowly, and a cyst is rarely diagnosed during childhood or adolescence unless the brain is affected. CE is a disease of younger adults, with an average age at diagnosis of 30-40 years, whereas alveolar echinococcosis (AE) is a disease of older adults, with an average age at diagnosis of older than 50 years.

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