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The outer layer of a hydatid cyst.
[ecto- + G. kystis, bladder]
Farlex Partner Medical Dictionary © Farlex 2012
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Within the pericyst lies the external layer of the cyst itself (ectocyst) and the inner germinative membrane or the endocyst.
Cyst is composed of endocyst, ectocyst and pericyst.
** ectocyst: cyst membrane allows passage of nutrients
(7) En bloc resection without inducing rupture and spreading the daughter cyst is recommended treatment strategy and accepted to be curative for intramuscular hydatid disease (8,9) Partial cystectomy, however, is another commonly practiced modality of surgery where the surrounding adhesions or the removal of ectocyst is considered to do more harm than good.