PMC5831991_01
Computed tomographic image showing moderately enhancing cystic lesion at hepatic flexure (arrow).
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fig1
Computed tomography (CT) scan of the abdomen with contrast revealed a 20 mm moderately enhancing cystic lesion at the hepatic flexure (Figure 1).
Intraluminal mass at hepatic flexure (a) and transparent appearance (b).
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fig2
On repeat colonoscopy, a tattooed subepithelial intraluminal transparent mass lesion was seen at the hepatic flexure (Figure 2).
12 MHz EUS images showing subepithelial anechoic lesion lined by mucosa.
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fig3
A 12 MHz mini-EUS probe was passed through the biopsy channel of the colonoscope which revealed a 14 mm subepithelial anechoic cystic lesion lined by mucosa consistent with colonic duplication cyst (Figure 3).
Fluid drainage after unroofing the cyst cavity (a) and flattening of lesion after drainage (b).
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fig4
Hot snare was used to unroof and expose the cyst cavity (Figure 4(a)). Clear fluid was seen gushing from the mass with flattening of the lesion after drainage (Figure 4(b)).
Normal colonic mucosa with thermal cautery artifact.
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fig5
Pathologic evaluation showed normal colonic mucosa without any dysplastic changes (Figure 5).