[Gallbladder distomatosis. Echographic picture].

A 21 years old man presented biliary colic. Ultrasonography showed in the gallbladder an homogeneous, solid mass, 4 cm large, without acoustic shadowing and no postural movement. The increase of eosinophilic blood cells suggested the diagnosis of distomiasis of the gallbladder. The diagnosis has been confirmed by immunofluorescent test and surgery.