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Table 2 Clinicopathological chracteristics of hindgut neuroendocrine tumor

From: The clinicopathological significance of angiogenesis in hindgut neuroendocrine tumors obtained via an endoscopic procedure

Age (years)

 Range

37 to 81

 mean ± SD

59.6 ± 12.0

MVD (mm2)

 Range

1.4 to 73.9

 mean ± SD

17.3 ± 14.2

 Relationship to venous invasion

Significant positive correlation

(Mann–Whitney U test)

LMVD (mm2)

 Range

0 to 22.9

 mean ± SD

6.5 ± 6.5

 Relationship to lymphatic invasion

Significant positive correlation

(Mann–Whitney U test)

Gender (n, %)

 Male

23, 54.8 %

 Female

19, 45.2 %

Pathological grade (n, %)

 NET G1

34, 81 %

 NET G2

8, 19 %

Ki 67 labeling index (%)

 Range

0.1 to 3.2

 mean ± SD

1.1 ± 0.8

 Relationship to tumor diameter

No significant correlation (Pearson’s product–moment correlation coefficient, p = 0.136)

Venous invasion (n, %)

 Negative

32, 76.2 %

 Positive

10, 23.8 %

Lymphatic invasion (n, %)

 Negative

29, 69 %

 Positive

13, 31 %

Tumor diameter (μm)

 Range

998.1 to 10046.0

 mean ± SD

5058.0 ± 2410.3

 Relationship to MVD

Significant positive correlation

(Pearson’s product–moment correlation coefficient, r = 0.612, p < 0.001)

 Relationship to LMVD

No significant correlation (Pearson’s product–moment correlation coefficient, p = 0.744)

Pathological stage (n, %)

 pStage I

40, 95.2 % (all of them are pT1 and n0)

 pStage II

0, 0 %

 pStage IIIB

1, 2,4 % (lymph node metasis positive)

 Unknown

1, 2.4 % (margin positive)

  1. Legend: In this table clinicopathological characteristics and some statistical analyses of 42 hindgut neuroendocrine tumors were summarized
  2. MVD microvessel density, LMVD lymphatic microvessel density, SD standard deviation