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Figure 5. (a) Axial CT image through the mid-ascending colon showing the primary tumour as a circumferential soft tissue density mass. The scan depicts peritumoral stranding posteriorly, suggestive of T3 disease (white arrows). (b) Axial CT image of tumour at the level of mid-sigmoid. The primary tumour is demonstrated as a segment of thickened sigmoid colon with enhancing soft tissue density and nodularity into pericolic fat, in keeping with a T3 tumour (white arrow).
