PMC3573784_01
CT scan showing biliary cystadenoma. The cystic lesion (black arrow) in segment 4 of the liver with a central focus of high density is seen representing the biliary cystadenoma. A bile duct stent placed during ERCP can also be seen (red arrow).
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F1
CT scan (fig. 1) showed similar findings with a complex cyst in the inferior aspect of the left lobe of the liver with mild dilation of bile ducts of the left hepatic lobe.
Appearance of biliary cystadenoma during ERCP. A filling defect extending from the common hepatic duct to the left hepatic duct is seen (arrow).
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F2
ERCP showed dilation of the right and left hepatic ducts and a 3-4 cm oblong filling defect in the common hepatic duct extending into the left hepatic duct (fig. 2).
Histology of biliary cystadenoma: high power view (20x) showing mucinous lining of the cyst (black arrows) along with the ovarian like stroma (red arrows). Epithelial lining is bland with basal nuclei and abundant mucin-filled cytoplasm with no evidence of stromal invasion or malignancy.
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F3
Histological exam showed mucinous lining of the cystic lesion with ovarian-like stroma suggestive of biliary cystadenoma with no evidence of malignancy (fig. 3).