2. MARGINS
3. LYMPHOVASCULAR & NEURAL INVASION
4. LYMPH NODES
5. PATHOLOGIC STAGING (AJCC 8th/9th Ed.)
Intestinal obstruction due to rectosigmoid mass, previously diagnosed as adenocarcinoma (biopsy: Pathology number 1612-26)
Rectosigmoidectomy specimen: colonic segment measuring 23 cm, with attached mesenteric fat measuring 8.5 x 5 cm. Upon opening, a solid, firm, greyish-white polypoid mass is identified, measuring 2.5 x 2 x 1.5 cm. The mass was located 17.5 cm from the proximal margin and 3 cm from the distal margin. Dissection of the mesenteric fat yielded eight lymph nodes, the largest of which measured 0.6 cm in its greatest dimension.
Rectosigmoid mass, Resection: