Specimen Received:
A: Left hemicolectomy
B: Splenectomy
C: Segment of small intestine
Diagnosis:
Adenocarcinoma
Histologic type: Gland-forming (moderately differentiated)
Histologic grade: Grade 2
Tumor extension: Tumor invades through the muscularis propria into the subserosa and extends to the visceral peritoneum (serosa) with gross perforation
Lymph nodes: Negative for malignancy (0/17)
Spleen: Negative for malignancy
Small intestinal segment: Negative for malignancy
Lymphovascular invasion: Not identified
Perineural invasion: Not identified
Tumor budding: Low score
Surgical margins:
Proximal margin: Negative (14 cm from tumor)
Distal margin: Negative (7 cm from tumor)
Radial (circumferential) margin: Negative
Pathologic Staging (AJCC):
Primary tumor: pT4b (tumor directly perforates the visceral peritoneum)
Regional lymph nodes: pN0 (0/17)
Distant metastasis: pM0 (no metastasis in submitted spleen or small intestine)
Anatomic stage group: Stage IIC
Lt. sided colon mass.
Received is a left hemicolectomy specimen measuring 30 cm long with attached mesenteric fat. Opening revealed a solid, firm, creamy greyish mass measuring 9 x 5.5 x 4.8 cm, with perforation in an area of 4 cm. The tumor was located 14 cm away from the proximal margin and 7 cm away from distal margin. Seventeen lymph nodes were dissected, with the largest measuring 0.7 cm. Also received is a splenectomy measuring 12 x 7 x 4.2 cm with unremarkable cut section. Additionally, there is a separate segment of small intestine measuring 3 x 2 cm, unremarkable grossly.
Colon, left hemicolectomy: