Hepatic hydatid cyst

Case contributed by Dr Rengarajan R

Presentation

Right hypochondrial pain.

Patient Data

Age: 30
Gender: Female
Modality: Ultrasound

Hepatomegaly with hydatid cyst showing crumpled membranes

Case Discussion

Hydatid cysts may show a variety of appearences. The cyst wall is three layered of which detachment of the endocyst from the pericyst leads to the appearence of a well defined fluid collection with a localised split in the wall and floating membranes within the cavity.

Complete detachment of the membranes inside the cyst has been referred to as the US water lily sign as is seen with this case.

Detachment of the endocyst from the pericyst is probably related to decreasing intracystic pressure, degeneration, host response, trauma, or response to therapy.

US is the most sensitive modality for the detection of membranes, septa, and hydatid sand within the cyst.

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Case Information

rID: 25053
Case created: 1st Oct 2013
Last edited: 20th Sep 2015
Inclusion in quiz mode: Included

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