Figures:
Figure1: Rectal circumferential ulcerated tumor
Figure2: Histopathology showing an H&E stained section of a rectal biopsy× 40 (A); IHC showing CD20 + rectal cells (B) and CD3+ rectal cells (C); IHC analysis of Ki-67 expression (Ki-67 =80%) (D).
Figure3: Pelvic CT-scan: parietal thickening of the rectum and mesorectal and bilateral hypogastric lymph nodes