Fig. 3 Contrast-enhanced MRI. a, T2WI showed high signal. b, enhancement
showed slight enhancement in the periphery of the lesion and no
significant enhancement in the interior. c, DWI showed high signal. d,
ADC showed high signal.
Finally, the patient underwent transanal endoscopic resection of rectal
mass, and the postoperative pathology was as follows: multiple mucous
lakes could be seen in the rectal intestinal wall, locally covered by
intestinal epithelium, no atypia, and the laminar propria interstitials
could be seen, which was consistent with CCP (Figure 4).