CASE REPORT
CASE 1
A 34-year-old male with defecation characteristics changed for more than 6 years, mainly manifested as mucous defecation, no increase in defecation frequency, no urgency, no abdominal pain and other discomfort. No special treatment was given, and now he came to the hospital for diagnosis and treatment.
Digital rectal examination (DRE): 5cm into the finger can reach the tough mass, smooth surface, movable, no blood staining in the receding finger sleeve. Laboratory examinations: Blood routine, liver and kidney function, tumor markers are all in normal range.
Endorectal ultrasound (ERUS): a cystic mass was observed at 70 mm from the anal verge, at the 12-2 o’clock direction in the lithotomy position, in the submucosal layer and intrinsic muscular layer of the rectum, with a size of 26 mm in diameter, clear boundary, regular morphology, protruding into the lumen, with poor internal transmission and heterogeneous echogenicity, and continuous echogenicity in the mucosal and serous layers of the rectum. Color Doppler flow imaging (CDFI): A few blood flow signals were observed in the periphery, but no obvious blood flow signals were observed in the interior of lesion (Figure 1).