PMC3895048_01
A colonoscopic image demonstrating ~1-cm polypoid mass at the ano-rectal junction.
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Colonoscopy revealed a 1-cm firm polypoid mass at the ano-rectal junction (Fig. 1).
The 10 x 15 cm pre-sacral pelvic mass on sagittal contrast CT.
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This revealed a 10 x 15 cm homogenous mass arising from within the pelvis (Fig. 2).
Image of the pelvic mass with the sigmoid reflected.
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The sigmoid colon was subsequently divided ~15 cm above the peritoneal reflection and retracted anteriorly to allow access to the tumour (Fig. 3). 