PMC3864141_01
Colonoscopy before (a) and after (b) chemoradiotherapy (CRT).
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fig1
An abdominal CT scan and colonoscopy performed after CRT demonstrated significant tumor reduction (Figures 1 and 2).
Abdominal computed tomography (CT) findings both (a) before and (b) after CRT.
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fig2
An abdominal CT scan and colonoscopy performed after CRT demonstrated significant tumor reduction (Figures 1 and 2).
Resected specimen showing only ulcer scar.
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fig3
The surgical specimen of the rectum showed only ulcer scar (Figure 3).
Pathological examination showing no tumor cells (hematoxylin-eosin stain).
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fig4
Pathological examination revealed no residual cancer cells and showed pCR (Figure 4).