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Table 1 Clinical and pathological data of the patient a

From: Gastroenteropancreatic neuroendocrine tumour arising in Meckel’s diverticulum coexisting with colon adenocarcinoma

 

Colon adenocarcinoma

Neuroendocrine tumour

Tumour size

3.5 × 3.0 × 2.6 cm

3 × 2 × 2 cm

Fat tissue invasion

+

-

Lymph node invasion

+ (10/23)

- (0/23)

Perineural invasion

+

-

Vascular invasion

+

-

Lymphatic vessel invasion

+

+

Muscularis propria invasion

+

+

Serosal invasion

+

-

Resection margins

-

-

Tumour necrosis

-

-

CKAE1/AE3

+

+

CgA

+

+

KRAS

-

Not applicable

Synaptophysin

+

+

Ki-67

60%

3%

Mitoses/10 hpf

>20

≤2

Grade of the cancer

High grade (G3)

Low grade (G1)

Astler-Coller classification[4]

D

Not applicable

TNM stage

pT3pN2bpM1a

pT3pN0pM0

AJCC clinical stage[5]

IVA

IIB

  1. aAJCC, American Joint Committee on Cancer; CgA, Chromogranin A; CKAE1/AE3, Cytokeratin AE1/AE3; hpf, High-power fields; Ki-67, Antigen Ki-67; KRAS, v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog; TNM, Tumour, node, metastasis classification of malignant tumours.