title: [Regression analysis of the characteristics and outcome of colorectal cancer 1995 - 2007].
abstract: OBJECTIVE
  To explore the clinical characteristics and the prognostic factors of patients with colorectal cancer.
  
  
  METHODS
  The data of 2042 cases of colorectal cancer, pathologically confirmed at our hospital from January 1995 to December 2007, were summarized and analyzed.
  
  
  RESULTS
  The median age of all cases with colorectal cancer was 59 years old. The high-risk age ranged from 50 to 70 years old. The ratio of male and female was 1.4:1. The lesions located in rectum accounted for 46.2% and those for 22.0% in sigmoid. Patients under age 40 had a higher percentage of poor differentiation (33.5%) and mucinous carcinoma (16.7%). The cases with confirmed stage I, II, III and IV were 5.8%, 42.9%, 31.0% and 20.3% respectively. For all cases, the 1-, 3-, 5- and 10-year survival rates were 92.3%, 73.9%, 65.1% and 57.5% respectively. The independent risk factors for patient prognosis were age, gross type, differentiation, TNM staging and surgical type. Adjuvant chemotherapy was a protective factor. As compared with phase I (1995 - 2001), phase II (2002 - 2007) had a higher proportions of employing stapler, Dixon operation and adjuvant chemotherapy. The 1-, 3- and 5-year survival rates of phase II were higher than phase I (93.4%, 78.0% and 73.2% vs 90.6%, 69.2% and 58.8%).
  
  
  CONCLUSIONS
  The prognostic factors of patients with colorectal cancer are age, gross type, differentiation, TNM staging, surgical type and adjuvant chemotherapy.
authors.affiliation: Department of Gastrointestinal & Colorectal Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China. ccqsums@gmail.com
authors.forename: Chuang-qi
authors.initials: CQ
authors.lastname: Chen
authors.forename: Le-kun
authors.initials: LK
authors.lastname: Fang
authors.forename: Jin-ping
authors.initials: JP
authors.lastname: Ma
authors.forename: Shi-rong
authors.initials: SR
authors.lastname: Cai
authors.forename: Wen-guang
authors.initials: WG
authors.lastname: Dong
authors.forename: Yi-hua
authors.initials: YH
authors.lastname: Huang
authors.forename: Yu-long
authors.initials: YL
authors.lastname: He
authors.forename: Wen-hua
authors.initials: WH
authors.lastname: Zhan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D012044:Regression Analysis; D015996:Survival Rate; D055815:Young Adult