PMC4435378_01
Endoscopic appearance of the partially ulcerated, broad-based, stalked polypoid lesion in the descending colon.
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F1
Colonoscopy showed a 10-mm patelliform, wide-based polyp with central scarring and partial ulcerated surface in the descending colon just below the splenic flexure (Figure 1).
Histology slide of polypoid ulcerated lesion arising from the mucosal surface and lobular proliferation of variably sized capillaries in edematous stroma on H&E stain (100x magnification).
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F2
Histology showed a polypoid ulcerated lesion with lobular proliferation of variably sized capillaries in edematous stroma without signs of malignancy (Figure 2).
Second endoscopy with narrow band imaging 10 weeks later showing a rapidly progressive size of the former polyp.
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F3
Repeat colonoscopy 10 weeks later revealed a similar-appearing polyp at the site of previous biopsy with rapid increase in size to 20 mm (Figure 3).