Factors

Differentiated type group (n = 24)

Undifferentiated type group (n = 23)

P-value

Postoperative recurrence

3 (13%)

5 (22%)

0.461

Type of recurrence

   Local

   Lymph nodes

   Peritoneal dissemination

   Distant organ

      Liver

      Brain

0

2

2

1

0

1

1

1

4

1

1

0