Objective      To explore the operation choice of acute cancerous left half colonic obstruction.       Methods      A total of 150 patients with acute cancerous left half colonic obstruction receiving different surgical treatment were enrolled in this study. The clinical data were retrospectively analyzed

and the differences in the operation time

hospitalization days

postoperative complications

5-year survival rate and median survival time were compared.       Results        Among all the patients

64 patients (42.7%) with colon cancer received phase Ⅰ colonic anastomosis through intraoperative colonic lavage

32 patients (21.3%) received phase I colonic anastomosis through preoperative stenting

28 patients (18.7%) received phase Ⅰ colonic cancer resection and proximal colostomy

20 patients (13.3%) received Hartmann operation

and 6 patients (4%) received pure colon colostomy. The operation time of phase Ⅰ colonic anastomosis through intraoperative colonic lavage was the longest (207.6±10.7 min)

and the difference was statistically significant (P0.05). The hospitalization days of pure colon colostomy were the longest (20.5±4.9 d)

and the difference was statistically significant (P0.05). The postoperative complications had no statistical differences among different surgical treatments (P0.05). The 5-year survival rate and median survival time of phase I colonic anastomosis were the highest

with statistically significant difference (P0.05).       Conclusion        The operation of acute cancerous left half colonic obstruction should be carried out based on the principle of resection first and anastomosis second

with the individual situation in consideration. Under good condition

phase I colonic anastomosis should be chosen.