PMC10371551_01
Intravenous contrast enhanced CT examination of the abdomen (a) axial (b) coronal demonstrating segment 4 hepatic lesion (white arrow) that has slightly increased and heterogeneous attenuation in comparison with segment 2/3 hepatic simple cyst (black arrow).
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CT of the abdomen (Figures 1(a) and 1(b)) revealed a simple benign cystic lesion in the left lateral hepatic lobe (segments 2/3) and an additional indeterminant nonenhancing, hypoattenuating lesion (48 HU) measuring 22 mm in seg 4B.
Axial CT fused image of FDG PET examination demonstrating no evidence of abnormal metabolic activity within segment 4 hepatic lesion.
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Further evaluation of this lesion by multiphase CT (Figure 2) revealed a nonenhancing, low-attenuating lesion located in seg 4B of the liver measuring 26 x 21 x 15 mm.
CT guided core biopsy of segment 4 hepatic lesion.
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A CT-guided core biopsy of the liver lesion (Figure 3) was completed, revealing benign hepatocellular parenchyma without atypical change.
Ciliated hepatic foregut cyst histology. (a) Low power H&E showing pseudostratified columnar epithelium, with underlying subepithelial connective tissue and loose lamina propria (arrows). (b) High-power H&E showing ciliated pseudostratified columnar epithelium (example circled). (c) High-power H&E showing ciliated pseudostratified columnar epithelium with the overlying epithelium demonstrating admixed goblet cells (example circled). (d) High-powered H&E showing pseudostratified columnar epithelium (circled) with an abundance of admixed goblet cells (arrows).
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The cyst was noted to have an epithelial lining with varying complexity (Figures 4(a) and 4(b)), with portions lined by simple ciliated epithelium with abundant goblet cells (Figures 4(c) and 4(d)).