PMC5422721_01
Peduculated lesion in the ascending colon.
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F1
The patient underwent repeat colonoscopy, which revealed a 50-mm polyp (Fig. 1) in the ascending colon.
Gross morphology of the endoscopically resected lesion.
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F2
It was successfully removed using an endoloop placement and hot snare polypectomy (Fig. 2).
Cystic lymphangioma of the colon. Hematoxylin and eosin staining under high magnification showing dilated channels lined by endothelial cells containing lymph nodes. The stroma contains fibrocollagenous tissue and scant cellular infiltrate (x100 magnification).
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F3
Histopathological examination showed polypoid colonic tissue with markedly dilated spaces, lined by a single layer of thin endothelial cells predominantly in the submucosa with overlying normal colonic mucosa, consistent with cystic lymphangioma of the colon (Fig. 3).