Table 1 Clinical and Histopathologic Data of All Patients

Location of tumors

   Ascending colon

131

   Transverse colon

81

   Descending colon

49

   Sigmoid

161

   Rectosigmoid junction

50

   Rectum

192

Urgency of operation

   Elective

563

   Emergency

101

Depth of tumor invasion

   T3

585

   T4

79

Tumor type

   Adenocarcinoma

606

   Mucinous carcinoma

58

Tumor grade

   Well differentiated

40

   Moderately differentiated

580

   Poorly differentiated

44

Lymphovascular permeation

   No

576

   Yes

88