title: Ultrasound appearances of liver hydatid disease.
abstract: They grey scale ultrasound features of liver hydatid disease have been evaluated on 65 surgically proven cysts in 38 patients. The majority of cysts showed the well-known ultrasound pattern of simple cysts. However, a minority of lesions were either multicystic or gave the appearance of a cyst within a cyst. Occasionally cysts showed a feature which we have called "the ultrasonographic water lily sign". Hydatid sand was also occasionally seen in the most dependent portion of hydatid cysts. We have noted that if a hydatid cyst becomes secondarily infected these typical ultrasound patterns are lost and the ultrasound diagnosis may then become more difficult.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D004444:Echinococcosis, Hepatic / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D014463:Ultrasonography