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The Gharbi classification of hydatid cysts
| Type | Characteristics |
| I | Unilocular cyst, wall and internal echogonicities |
| II | Cyst with detached membrane (water-lily sign) |
| III | Multivesicular, multiseptated cyst, daughter cyst (honeycomb pattern) |
| IV | Hererogeneous cyst, no daughter vesicules |
| V | Cyst with partially or completely calcified wall |
