Table 1. Appearance of biliary mucinous cystadenoma on various imaging modalities.

Imaging modality	Appearance of biliary mucinous cystadenoma
Ultrasound	Anechoic Thickened irregular walls and multiple internal septations Papillary in-folding, mural nodules
Computed tomography	Multicystic and multiseptated lesion With contrast, displays isodensity to water (less than 30 Hounsfield units) Displays nodular areas of enhancement
Magnetic resonance imaging	Multilocular with irregular thick walls Varying cystic fluid signal intensities and intracystic septations