Describe the typical imaging findings of hepatic cystic lesions that are suggestive of biliary cystadenomas (CAB), using images obtained with ultrasound, CT and MRI, we able to know their suspected diagnosis and to evaluate the conditions with which we make the diagnosis difference. To meet this objective we will build on our experience and the literature reviewed.

Hepatobiliary cystadenomas are rare cystic lesions (4.6%), more common in middle-aged women. These lesions may be single or multiples that they are benign but with a high malignant potential. The signs and symptoms presented by patients most often are usually secondary to mass effect and include among other. - Asthenia - Weight Loss - Cholestasis - Ascites - Partial bowel obstruction - etc... Laboratory tests are nonspecific presenting in some cases elevated levels of Ca 19.9 (rare histologic subtype called (CAB) with mesenchymal stroma) whose...

Usually the diagnosis of the CAB approach begins with ultrasound, is generally indicated by the symptoms secondary to mass effect, although it is sometimes seen when testing for other causes. After identifying the lesions on ultrasound usually complements the study with CT and in some cases of diagnostic uncertainty complements MRI. Among the most commonly visualized findings in the CAB include: - Ultrasound anechoic cystic lesions of varying sizes, most often with thick septa hyperechoic intrahepatic. - TC: Confirm ultrasound findings, observing liquid containing lesions...

Biliary cystadenoma is a rare disorder that manifests as single or multiple cystic lesions that given its malignancy should be removed. Therefore supported by the radiographic diagnosis is important, where most often identify cystic lesions with thickened septa that enhance after contrast administration and may be associated calcified wall, differential diagnosis must be made primarily with hydatid cysts and less often with simple cysts, Caroli disease and other pathologies. The recurrence of these lesions is necessary radiological monitoring.

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