PMC2997285_01
Gross appearance of a unilocular intramural cyst located under the mucosa showing diffuse cholesterosis.
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fig1
Macroscopic examination of the specimen revealed a submucosal unilocular cyst, located in the neck of the gallbladder, measuring 3.5 x 2 x 1.5 cm, without communication to the lumen (Figure 1).
The cyst is lined by a pseudostratified ciliated columnar epithelium and has an underlying smooth muscle wall (HE, Original magnification is x40, inset x1000).
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fig2
In the microscopic examination, the cyst wall was made up of muscular tissue and it was lined by pseudostratified ciliated epithelium (Figure 2).
The cyst epithelium containing a few goblet cells (arrows) (Periodic asid-Schiff, Original magnification is x200).
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fig3
The epithelium contained a few goblet cells staining bright magenta by periodic acid-Schiff stain (Figure 3).
SMA expression in the cyst wall with its positive control in the vascular smooth muscle (Immunohistochemistry, Original magnification is x100).
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fig4
The smooth muscle wall stained with SMA immunohistochemically (Figure 4).