Fig. 7 Contrast-enhanced MRI. a, T2WI showed high signal intensity and multiple low signal separations. b, separate enhancement was presented in the lesion. C,DWI showed high signal (low signal area was calcification). d,ADC showed high signal without any decrease.
Colonoscopy: A size of 20 mm × 18mm protuberant mass was seen on the anterior wall about 4cm from the anal verge, with superficial ulcer on the surface. Endoscopic resection of rectal submucosal mass was performed, and the submucosal incision showed gelatinous appearance (Figure 8). Postoperative pathology: colitis cystica profunda of the rectum with calcification (Figure 9).