PMC5640882_01
(A) Magnetic resonance imaging of the liver (with Eovist contrast) showing a cystic lesion in the left hepatic lobe measuring 6.0 cm x 6.1 cm x 3.8 cm. There is thin enhancement of septations seen within the lesion. (B) Gross pathology showing a large, well-circumscribed mass with surrounding liver parenchyma. (C) Serial sectioning of the mass revealed a cyst-like appearance with clear serous fluid filling the central portion. (D) The resected cyst is lined by mucin-type epithelium ranging from low cuboidal to stratified-columnar with frequent papillary tufting. No significant nuclear pleomorphism or loss of nuclear polarity is noted. The histologic findings are best classified as mucinous cystic neoplasm with low-intermediate grade dysplasia (original magnification 20x, hematoxylin and eosin).
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F1
A repeat abdominal MRI (with Eovist contrast) showed the complex multi-cystic lesion had increased slightly in size to 6.1 cm x 4.1 cm x 6.4 cm (Figure 1A). Gross histopathological assessment revealed a well-circumscribed 7.3 cm x 5.8 cm mass (Figure 1B). Serial sectioning revealed clear serous fluid within the cystic lesion as well as a ragged white appearance of the cyst lining (Figure 1C). There was no distortion of the surrounding hepatic architecture or evidence of hepatic fibrosis (Figure 1D).