PMC4849392_01
Tumoral mass revealed at colonoscopy.
cm-89-301f1.jpg
PMC4849392_01_cm-89-301f1.jpg
f1-cm-89-301
Colonoscopy was performed to investigate persistent diarrhea of unknown cause, which revealed a mass extending from the superior rectum to 5 cm from the anal margin with high suspicion of malignancy (Figure 1).
Postoperative specimen.
cm-89-301f2.jpg
PMC4849392_01_cm-89-301f2.jpg
f2-cm-89-301
Intraoperatively, we found a 20 cm-long rectal mass; a low anterior rectal resection with total mesorectal excision (TME) (Figure 2) with a mechanical end-to-end colo-rectal anastomosis and ileostomy was done.
Adenomatous proliferation limited to the mucosa; HE 40X.
cm-89-301f3.jpg
PMC4849392_01_cm-89-301f3.jpg
f3-cm-89-301
Aspects of low-grade dysplasia were predominating, with focal high-grade dysplasia, no submucosal layer invasion (Figure 3).
Area with high-grade dysplasia.
cm-89-301f4.jpg
PMC4849392_01_cm-89-301f4.jpg
f4-cm-89-301
Figure 4). Finally, the conclusion is argumentative for a giant rectal tubular-villous adenoma.