Copyright ©The Author(s) 2016.
World J Hepatol. Oct 8, 2016; 8(28): 1169-1181
Published online Oct 8, 2016. doi: 10.4254/wjh.v8.i28.1169
Table 2 The World Health Organization classification of hydatid cysts
WHO stageCharacteristicsActivity
CE1Uniloculer, anechoic cyst with double line signActive
CE2Multiseptated “rosette-like”“honeycomb patern” cystActive
CE3aCyst with detached membrane (water-lily sign)Transitional
CE3bDaughter cysts in solid matrixTransitional
CE4Hererogeneous cyst, no daughter vesiculesInactive
CE5Solid matrix with calcified wallInactive