[Evaluation of operative risk in emergency treatment of neoplastic left colon obstruction: personal experience]. 
To analyse the risk factors in the treatment of intestinal obstruction due to colorectal carcinoma.  The treatment of neoplastic obstruction of the right colon until the splenic flexure is well defined: right hemicolectomy, enlarged right hemicolectomy.  Otherwise the treatment of the obstruction due to left colon carcinoma beyond left flexure is not standardized.  The Authors report on a consecutive series of 15 patients, classified according to Colorectal Tumours Emergencies Score (CTES), based on the analysis of 4 risks factors: colic, perforation, serum albumin, concurrent cardiovascular disease, chronic renal insufficiency.  Each patient has been ranked in three classes of risk: low (CTES < 4), moderate (CTES 4-12), and high (CTES > 12).  Referring to this classification the Authors consider the choice of surgical treatment.  When general conditions of the patient permit, it seems preferable to perform primary anastomosis.