Two-stage resection for malignant colonic obstructions: The timing of early resection and possible predictive factors

Table 3 Perioperative data and tumor characteristics

	Group A (n = 19)	Group B (n = 19 )	P value
Type of operation			0.201
Left hemicolectomy	16 (84)	11 (58)
Extended left hemicolectomy	1 (5)	3 (16)
Anterior resection	2 (10)	5 (26)
Operation time (h)	4.9 ± 0.4	5.5 ± 0.7	0.003
Blood loss (mL)	213 ± 149	250 ± 92	0.533
Blood transfusion (mL)	26.3 ± 78.8	39.5 ± 93.7	0.642
Tumor location			0.162
Transverse colon	2 (10)	2 (10)
Descending colon	11 (58)	5 (26)
Descending/ sigmoid colon	2 (10)	7 (37)
Sigmoid colon	4 (21)	5 (26)
Pathological diagnosis
Adenocarcinoma	19	19
Tumor differentiation			0.734
Well or moderate	15 (79)	13 (69)
Poor	3 (16)	4 (21)
Undifferentiated or not known	1 (5.3)	2 (10)
Stage			0.260
II	6 (32)	11 (58)
III	11 (58)	7 (37)
IV	2 (10)	1 (5)

Data are presented as n, n (%), mean ± SD or as noted.