Biliary cystadenoma and cystadenocarcinoma echocardiography or ultrasound

Biliary cystadenoma and cystadenocarcinoma Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Ultrasound

There are no specific imaging features that permit reliable differentiation of biliary cystadenoma from cystadenocarcinoma.

• At US, a biliary cystadenoma appears as a unilocular or multilocular cyst with enhanced through transmission.
• Acoustic shadowing may be present from septal or wall calcification.
• The cyst fluid may contain low-level echoes from blood products, mucin, or proteinaceous fluid. Serous and bilious cyst fluid is generally anechoic.
• Echogenic mural nodules and papillary projections may be present.