Table 2. The World Health Organization classification of hydatid cysts13 Table 2. The World Health Organization classification of hydatid cysts13 Table 2. The World Health Organization classification of hydatid cysts13
Ghabis classification WHO stage Characteristics Activity
Type I CE1 Unilocular, anechoic cyst with double line sign Active
Type III CE2 Multiseptated “rosette-like” “honeycomb pattern” cyst Active
Type II CE3a Cyst with detached membrane (water-lily sign) Transitional
Type II CE3b Daughter cysts in solid matrix Transitional
Type IV CE4 Heterogeneous cyst, no daughter vesicles Inactive
Type V CE5 Solid matrix with calcified wall Inactive
Potentially parasitic cyst (very early stage of parasite development). WHO, World Health Organization; CE, cystic echinococcosis. Potentially parasitic cyst (very early stage of parasite development). WHO, World Health Organization; CE, cystic echinococcosis. Potentially parasitic cyst (very early stage of parasite development). WHO, World Health Organization; CE, cystic echinococcosis. Potentially parasitic cyst (very early stage of parasite development). WHO, World Health Organization; CE, cystic echinococcosis.