Review
Copyright ©2013 Baishideng Publishing Group Co.
World J Gastroenterol. Nov 21, 2013; 19(43): 7603-7619
Published online Nov 21, 2013. doi: 10.3748/wjg.v19.i43.7603
Table 2 World Health Organization-Informal Working Group on Echinococcosis
TypeUltrasonographic features and patterns
CLUnilocular cystic lesion with uniform anechoic content, cyst wall not visible
CE1Unilocular cystic lesion with uniform anechoic content, cyst wall visible, snowflake sign
CE2Multivesicular, multiseptated cysts, daughter cysts present, honeycomb sign
CE3Unilocular cyst containing liquid with a floating membrane inside, daughter cysts may be present, water-lily sign
CE4Cysts with heterogeneous hypoechoic or hyperechoic degenerative contents, no daughter cysts
CE5Cysts characterized by a thick calcified wall, which is arch-shaped, producing a cone-shaped shadow; degree of calcification varies from partial to complete