Emergency resection surgery for colorectal cancer: Patterns of recurrent disease and survival

Table 1 Site of primary tumour and histological features in 266 curative resections for colorectal cancer n (%)

Tumour site
Rectum	115 (43.23)
Recto-sigmoid junction	2 (0.75)
Sigmoid	64 (24.06)
Descending/splenic flexure	7 (2.63)
Transverse colon	14 (5.26)
Ascending/hepatic flexure	15 (5.64)
Caecum	49 (18.42)
Tumour size1
T1	8 (3.00)
T2	54 (20.30)
T3	121 (45.49)
T4	66 (24.81)
Missing	18 (6.77)
Nodal status and invasion1
N0	154 (57.89)
N1	65 (24.43)
N2	30 (11.28)
LVI (data missing in 15)	60 (22.56)
PNI (data missing in 15)	14 (5.26)
Resection margin (data missing in 16)
R0	229 (86.09)
R1	14 (5.26)
R2	7 (2.63)
Tumour differentiation (data missing in 17)
Well	22 (8.27)
Moderately	176 (66.17)
Poor	51 (19.17)

¹Values given in parenthesis are percentages. Disease staging was based on postoperative histology findings and stage was not compared with preoperative radiological staging or post neoadjuvant therapy. T: Tumour size; N: Nodal status; LVI: Lymphovascular invasion; PNI: Perineural invasion; R: Resection margin.