Table 1 Clinicopathologic characteristics of the study population

Primary site

Gastrenteropancreatic

156 (63.4)

Stomach

54 (35 %)

 Corpus

37 (68.5)

 Antrum

11 (20.4)

 Fundus

6 (11.1)

Pancreas

36 (23 %)

 Head

20 (55.6)

 Tail

10 (27.8)

 Body

6 (16.7)

Duodenum

8 (5 %)

Jejunum

5 (3 %)

Ileum

10 (6 %)

Appendix

17 (11 %)

Colon

8 (5 %)

Rectum

18 (12 %)

Head and Neck^c

44 (17.9)

Unknown Primary

24 (9.8)

Lung

16 (6.5)

 Typical

10 (62.5)

 Atypical

6 (37.5)

Pheochromocytoma

6 (2.4)

Differentiation Grade^a

 Well

132 (58.4)

 Moderate

73 (32.3)

 Poor

21 (9.3)

Ki-67 ^b

 ≤2 %

166 (72.8)

 3–20 %

56 (24.5)

 >20 %

6 (2.6)